{"title":"Preamp Tubes","description":"","products":[{"product_id":"e88cc-6dj8-philips-heerlen-special-quality-o-getter-tube-gold-pin-made-in-holland","title":"E88CC ( 6922 ) PHILIPS Special Quality Halo Getter Tube Gold Pin Made in Holland '66","description":"\u003cp\u003e\u003cstrong\u003eE88CC ( 6922 ) PHILIPS Special Quality Halo Getter Gold Pin \u003cmeta charset=\"utf-8\"\u003eTube \u003c\/strong\u003e\u003cstrong\u003eMade in Holland '66\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"1013\" data-start=\"0\"\u003eLa \u003cstrong data-end=\"73\" data-start=\"33\"\u003eE88CC (6922) PHILIPS Special Quality\u003c\/strong\u003e rappresenta una delle versioni più pregiate della serie a doppia triode noval sviluppata per applicazioni professionali, audio e strumentali di alta precisione.\u003cbr data-end=\"237\" data-start=\"234\"\u003eProdotta nello stabilimento \u003cstrong data-end=\"296\" data-start=\"265\"\u003ePHILIPS di Heerlen (Olanda)\u003c\/strong\u003e nel \u003cstrong data-end=\"317\" data-start=\"301\"\u003egennaio 1966\u003c\/strong\u003e, questa valvola appartiene alla selezione \u003cstrong data-end=\"384\" data-start=\"360\"\u003eSQ (Special Quality)\u003c\/strong\u003e, realizzata con criteri di lunga durata, stabilità elettrica e bassa microfonicità, destinata ad impieghi critici in strumenti di misura, apparecchi broadcast e preamplificatori hi-fi di fascia alta.\u003cbr data-is-only-node=\"\" data-end=\"587\" data-start=\"584\"\u003eLa costruzione con \u003cstrong data-end=\"624\" data-start=\"606\"\u003eplacche grigie\u003c\/strong\u003e, \u003cstrong data-end=\"643\" data-start=\"626\"\u003egetter a halo\u003c\/strong\u003e e \u003cstrong data-end=\"664\" data-start=\"646\"\u003epiedini dorati\u003c\/strong\u003e testimonia l’attenzione della casa olandese per l’affidabilità e la purezza del contatto elettrico, riducendo l’ossidazione e migliorando la trasmissione del segnale nel tempo.\u003cbr data-end=\"844\" data-start=\"841\"\u003eL’esemplare qui descritto è stato testato su \u003cstrong data-end=\"910\" data-start=\"889\"\u003eAmplitrex AT-1000\u003c\/strong\u003e con risultato \u003cstrong data-end=\"935\" data-start=\"925\"\u003eSTRONG\u003c\/strong\u003e, garanzia di efficienza piena e comportamento lineare su entrambe le sezioni.\u003c\/p\u003e\n\u003cp data-end=\"1647\" data-start=\"1020\"\u003e\u003cstrong data-end=\"1048\" data-start=\"1022\"\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003cbr data-end=\"1051\" data-start=\"1048\"\u003e\u003cstrong data-end=\"1061\" data-start=\"1051\"\u003eBassi:\u003c\/strong\u003e precisi, tesi e rapidi nella risposta, con una tenuta eccellente anche nei passaggi complessi.\u003cbr data-end=\"1159\" data-start=\"1156\"\u003e\u003cstrong data-end=\"1168\" data-start=\"1159\"\u003eMedi:\u003c\/strong\u003e setosi, trasparenti e naturali; le voci risultano presenti ma mai invadenti, con una timbrica tipicamente “neutra” e musicale.\u003cbr data-end=\"1298\" data-start=\"1295\"\u003e\u003cstrong data-end=\"1307\" data-start=\"1298\"\u003eAlti:\u003c\/strong\u003e estesi, luminosi e privi di asprezza. L’equilibrio tra dettaglio e dolcezza è esemplare, come nella migliore tradizione Heerlen.\u003cbr data-end=\"1439\" data-start=\"1436\"\u003e\u003cstrong data-is-only-node=\"\" data-end=\"1452\" data-start=\"1439\"\u003eDinamica:\u003c\/strong\u003e vivace e proporzionata, capace di restituire micro-contrasti con grande fluidità.\u003cbr data-end=\"1537\" data-start=\"1534\"\u003e\u003cstrong data-end=\"1552\" data-start=\"1537\"\u003eSoundstage:\u003c\/strong\u003e ampio, stabile e tridimensionale, con eccellente separazione dei canali e profondità di campo.\u003c\/p\u003e\n\u003cp data-end=\"1978\" data-start=\"1654\"\u003e🎧 \u003cstrong data-end=\"1694\" data-start=\"1657\"\u003eUso in Amplificatori Hi-Fi Stereo\u003c\/strong\u003e\u003cbr data-end=\"1697\" data-start=\"1694\"\u003eIdeale per preamplificatori di alto livello, DAC, stadi phono e circuiti driver in cui la neutralità e la precisione timbrica sono fondamentali.\u003cbr data-end=\"1844\" data-start=\"1841\"\u003eEccellente compatibilità con apparecchi Conrad Johnson, Audio Research, Counterpoint, EAR, Copland, e altri sistemi di scuola europea.\u003c\/p\u003e\n\u003cp data-end=\"2221\" data-start=\"1985\"\u003e🎸 \u003cstrong data-end=\"2021\" data-start=\"1988\"\u003eUso in Amplificatori Musicali\u003c\/strong\u003e\u003cbr data-end=\"2024\" data-start=\"2021\"\u003eMolto apprezzata anche in preamplificatori e testate valvolari professionali, dove offre un suono dettagliato e privo di rumori di fondo, con un perfetto equilibrio tra chiarezza e calore armonico.\u003c\/p\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"2655\" data-start=\"2228\"\u003e🎯 \u003cstrong data-end=\"2263\" data-start=\"2231\"\u003eNota per Audiofili e Tecnici\u003c\/strong\u003e\u003cbr data-end=\"2266\" data-start=\"2263\"\u003eLa sigla \u003cstrong data-end=\"2309\" data-start=\"2275\"\u003e“E88CC \/ 6922 Special Quality”\u003c\/strong\u003e identifica una versione a lunga vita (oltre 10.000 ore), con griglia rinforzata, piedini dorati e tolleranze selezionate.\u003cbr data-end=\"2434\" data-start=\"2431\"\u003eLa produzione \u003cstrong data-end=\"2464\" data-start=\"2448\"\u003eHeerlen 1966\u003c\/strong\u003e è tra le più ricercate per il suo equilibrio sonoro e per la costruzione impeccabile, divenendo un riferimento per chi desidera una valvola \u003cstrong data-end=\"2654\" data-start=\"2605\"\u003etrasparente, precisa e musicalmente raffinata\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 90V, Vg = -1,2V\u003cstrong\u003e\u003cbr\u003eMedia 100%:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eGm = 12,5 ; Ia = 15 mA\u003cstrong\u003e\u003cbr\u003eRISULTATO DEL TEST:\u003c\/strong\u003e FORTE\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvola \u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1\u003c\/strong\u003e: Gm = 11,0 ; Ia = 10,6 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2\u003c\/strong\u003e: Gm = 11,0 ; Ia = 10,0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Bassa. Testata e conforme per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra, anche in V1. \u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e\u003cspan\u003e Buone – Scritte parzialmente erose, ma ancora leggibili. Corpo della valvola in buone condizioni. Vedi foto per i dettagli.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e 7LB ⊿6A3 → 7Lx indica un E88CC con la progressione sequenziale di x - ⊿6A3 ⊿ → Heerlen (Olanda), 6 (su quattro cifre ) → 1966 - A → Gennaio - 3 → 3a settimana del mese\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"PHILIPS","offers":[{"title":"Default Title","offer_id":42982811926775,"sku":"00711","price":124.5,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_0fab8742-607e-419c-9cbd-f3cfafee7d9c.jpg?v=1761579366"},{"product_id":"12at7-ecc81-ge-nos-nib-gray-plates-o-getter-tested-tube-made-in-usa","title":"12AT7 ( ECC81 ) GE NOS NIB Wing Gray Plates O Getter Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AT7 ( ECC81 ) GE NOS NIB Wing Gray Plates O Getter Tested Tube \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProdotte da GENERAL ELECTRIC in USA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eQueste valvole offrono un suono caratterizzato da una notevole chiarezza e dettaglio, con una gamma media ben bilanciata e un'estensione delle alte frequenze ariosa e brillante. Questa versione con placche grigie, presenta un tono leggermente caldo, senza perdere in definizione, risultando perfetta per chi cerca un equilibrio tra precisione e musicalità. Ideali per applicazioni audio Hi-Fi e strumenti musicali, garantiscono una riproduzione sonora ricca e articolata.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLoghi usurati come da foto\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan\u003eTestate su AVO VCM 163 Tube tester:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test: Va = 250V ; Vg = -2V ; Vf = 6,3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Gm = 5,5 ; Ia = 10 mA\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSezione 1: Gm = 5,6 ; Ia = 12 mA\u003cbr\u003eSezione 2: Gm = 5,6 ; Ia = 13 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest Microfonia\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest per GAS\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":42983987183863,"sku":"00629","price":29.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/12at7-ecc81-ge-nos-nib-gray-plates-o-getter-tested-tube-made-in-usa-981205.jpg?v=1657112617"},{"product_id":"12av7-ge-nos-nib-short-gray-plates-d-getter-tested-tube-made-in-usa-62","title":"12AV7 GE NOS NIB Short Gray Plates D Getter Tested Tube Made in USA '62","description":"\u003cp\u003e\u003cstrong\u003e12AV7 GE NOS NIB Short Gray Plates D Getter Tested Tube Made in USA '62\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eDescrizione:\u003c\/h3\u003e\n\u003cp data-end=\"502\" data-start=\"84\"\u003eQuesta \u003cstrong data-end=\"125\" data-start=\"91\"\u003e12AV7 General Electric NOS NIB\u003c\/strong\u003e, Made in USA e databile \u003cstrong data-end=\"158\" data-start=\"150\"\u003e1962\u003c\/strong\u003e, è una valvola di segnale di grande qualità, oggi sempre più rara da reperire \u003cstrong data-end=\"259\" data-start=\"237\"\u003enuova di magazzino\u003c\/strong\u003e e completa della \u003cstrong data-end=\"298\" data-start=\"277\"\u003escatola originale\u003c\/strong\u003e.\u003cbr data-end=\"302\" data-start=\"299\"\u003eLa costruzione con \u003cstrong data-end=\"342\" data-start=\"321\"\u003eshort gray plates\u003c\/strong\u003e e \u003cstrong data-end=\"357\" data-start=\"345\"\u003eD getter\u003c\/strong\u003e è tipica delle migliori produzioni GE dei primi anni ’60, apprezzate per affidabilità, silenziosità e comportamento elettrico stabile nel tempo.\u003c\/p\u003e\n\u003cp data-end=\"671\" data-start=\"504\"\u003eTestata nel nostro laboratorio, la valvola risulta \u003cstrong data-end=\"583\" data-start=\"555\"\u003eperfettamente efficiente\u003c\/strong\u003e, con prestazioni coerenti e pronte all’uso in apparecchiature hi-fi e circuiti vintage.\u003c\/p\u003e\n\u003ch3 data-end=\"698\" data-start=\"678\"\u003eCarattere Sonoro\u003c\/h3\u003e\n\u003cp data-end=\"830\" data-start=\"700\"\u003e\u003cstrong data-end=\"709\" data-start=\"700\"\u003eBassi\u003c\/strong\u003e\u003cbr data-end=\"712\" data-start=\"709\"\u003eCompatti e ben controllati, con una risposta rapida e ordinata che contribuisce a un equilibrio generale molto pulito.\u003c\/p\u003e\n\u003cp data-end=\"960\" data-start=\"832\"\u003e\u003cstrong data-end=\"840\" data-start=\"832\"\u003eMedi\u003c\/strong\u003e\u003cbr data-end=\"843\" data-start=\"840\"\u003eChiari, naturali e ben focalizzati. Le voci emergono con buona presenza e definizione, senza colorazioni artificiali.\u003c\/p\u003e\n\u003cp data-end=\"1111\" data-start=\"962\"\u003e\u003cstrong data-end=\"970\" data-start=\"962\"\u003eAlti\u003c\/strong\u003e\u003cbr data-end=\"973\" data-start=\"970\"\u003eArmoniosi e correttamente estesi, con una grana fine e mai affaticante. L’equilibrio timbrico rimane elegante anche su ascolti prolungati.\u003c\/p\u003e\n\u003cp data-end=\"1247\" data-start=\"1113\"\u003e\u003cstrong data-end=\"1125\" data-start=\"1113\"\u003eDinamica\u003c\/strong\u003e\u003cbr data-end=\"1128\" data-start=\"1125\"\u003eReattiva e fluida, con una buona capacità di seguire le variazioni del segnale mantenendo sempre controllo e stabilità.\u003c\/p\u003e\n\u003cp data-end=\"1368\" data-start=\"1249\"\u003e\u003cstrong data-end=\"1263\" data-start=\"1249\"\u003eSoundstage\u003c\/strong\u003e\u003cbr data-end=\"1266\" data-start=\"1263\"\u003eOrdinato e credibile, con una scena sonora ben strutturata e una corretta separazione degli strumenti.\u003c\/p\u003e\n\u003ch3 data-end=\"1408\" data-start=\"1375\"\u003e🎧 Uso in Amplificatori Hi-Fi\u003c\/h3\u003e\n\u003cp data-end=\"1420\" data-start=\"1409\"\u003eIdeale per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1460\" data-start=\"1423\"\u003estadi di preamplificazione e driver\u003c\/li\u003e\n\u003cli data-end=\"1528\" data-start=\"1463\"\u003eamplificatori vintage e progetti ispirati alla scuola americana\u003c\/li\u003e\n\u003cli data-end=\"1604\" data-start=\"1531\"\u003esistemi che privilegiano chiarezza, equilibrio e affidabilità operativa\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1696\" data-start=\"1606\"\u003eUna scelta solida per chi desidera una valvola poco comune ma musicalmente molto coerente.\u003c\/p\u003e\n\u003ch3 data-end=\"1738\" data-start=\"1703\"\u003e🎸 Uso in Applicazioni Musicali\u003c\/h3\u003e\n\u003cp data-end=\"1753\" data-start=\"1739\"\u003eApprezzata in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1806\" data-start=\"1756\"\u003ecircuiti per strumenti e apparecchiature vintage\u003c\/li\u003e\n\u003cli data-end=\"1887\" data-start=\"1809\"\u003eapplicazioni dove sono richieste stabilità, risposta pulita e buona dinamica\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1965\" data-start=\"1889\"\u003eOffre un suono controllato, definito e privo di comportamenti imprevedibili.\u003c\/p\u003e\n\u003ch3 data-end=\"2009\" data-start=\"1972\"\u003e🎯 Nota per audiofili e tecnici\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"2119\" data-start=\"2082\"\u003eautentica produzione GE Made in USA\u003c\/li\u003e\n\u003cli data-end=\"2165\" data-start=\"2122\"\u003evera condizione NOS con scatola originale\u003c\/li\u003e\n\u003cli data-end=\"2213\" data-start=\"2168\"\u003ecostruzione robusta e storicamente corretta\u003c\/li\u003e\n\u003cli data-end=\"2263\" data-start=\"2216\"\u003ecomportamento sonoro equilibrato e affidabile\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"2452\" data-start=\"2265\"\u003eUna valvola selezionata per chi cerca \u003cstrong data-end=\"2356\" data-start=\"2303\"\u003equalità d’epoca, coerenza timbrica e valore reale\u003c\/strong\u003e, non solo un semplice ricambio ma un tassello autentico della tradizione elettronica americana.\u003c\/p\u003e\n\u003chr data-end=\"2265\" data-start=\"2262\"\u003e\n\u003cp\u003eValvole testate su \u003cstrong\u003eAmplitrex AT-1000\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTube tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e\u003cspan\u003e Va = 150V, Vg = -1V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eMedia 100% Gm = 8,5 ; Ia = 18 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1: \u003c\/strong\u003eGm = 7,9 ; Ia = 14,6 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e Gm = 8,9 ; Ia = 16,9 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Bassa. Testate e conformi per l'uso in hi-fi e amplificatori per chitarra.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBilanciamento:\u003c\/strong\u003e Le sezioni mostrano un leggero scostamento nei valori; ottime per l’uso in hi-fi e in applicazioni musicali (chitarra) ove non siano specificatamente richieste sezioni bilanciate.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003cspan\u003e NOS - NIB - New Old Stock, New In Box - Testata e funzionante - Fornite in scatola Originale.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e\u003cspan\u003e Eccellenti – Scritte ottimamente conservate, minimi segni del tempo. Vedi foto per i dettagli.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003e-\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":42986092331255,"sku":"00583","price":14.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/12av7-ge-nos-nib-short-gray-plates-d-getter-tested-tube-made-in-usa-62-954667.jpg?v=1657112604"},{"product_id":"12ay7-rca-nos-nib-gray-plates-o-getter-tested-tubes-made-in-usa-2","title":"12AY7 RCA NOS Gray Plates Halo Getter AMPLITREX Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cstrong\u003e12AY7 RCA NOS Gray Plates Halo Getter AMPLITREX Tested Tube MADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"119\" data-end=\"524\"\u003eProponiamo una \u003cstrong data-start=\"134\" data-end=\"147\"\u003e12AY7 RCA\u003c\/strong\u003e (designazione 6072) in condizioni \u003cstrong data-start=\"182\" data-end=\"193\"\u003eNOS\u003c\/strong\u003e (\u003cem data-start=\"195\" data-end=\"222\"\u003eNew Old Stock\u003c\/em\u003e), con classica costruzione \u003cstrong data-start=\"250\" data-end=\"265\"\u003egray plates\u003c\/strong\u003e e \u003cstrong data-start=\"268\" data-end=\"280\"\u003ehalo getter\u003c\/strong\u003e. Prodotta negli \u003cstrong data-start=\"297\" data-end=\"312\"\u003eStati Uniti\u003c\/strong\u003e, questa valvola è \u003cstrong data-start=\"331\" data-end=\"342\"\u003etestata\u003c\/strong\u003e e pronta all’uso: rappresenta la scuola sonora RCA più elegante, con rumorosità contenuta, ottima micro-dettaglio e una musicalità naturale che favorisce ascolti lunghi e rilassati.\u003c\/p\u003e\n\u003ch3 data-start=\"526\" data-end=\"552\"\u003eDescrizione Sonora\u003c\/h3\u003e\n\u003cp data-start=\"553\" data-end=\"1019\"\u003e\u003cstrong data-start=\"553\" data-end=\"563\"\u003eBassi:\u003c\/strong\u003e asciutti e tesi, ben controllati; fondamentale pulita e articolata senza rigonfiamenti.\u003cbr data-start=\"651\" data-end=\"654\"\u003e\u003cstrong data-start=\"654\" data-end=\"663\"\u003eMedi:\u003c\/strong\u003e vellutati e trasparenti; voci credibili e strumenti acustici con corpo e naturalezza.\u003cbr data-start=\"749\" data-end=\"752\"\u003e\u003cstrong data-start=\"752\" data-end=\"761\"\u003eAlti:\u003c\/strong\u003e fini e garbati; estensione ariosa senza asprezze, grana elegante tipica RCA.\u003cbr data-start=\"838\" data-end=\"841\"\u003e\u003cstrong data-start=\"841\" data-end=\"854\"\u003eDinamica:\u003c\/strong\u003e fluida e proporzionata; micro-contrasto leggibile e transitori controllati.\u003cbr data-start=\"930\" data-end=\"933\"\u003e\u003cstrong data-start=\"933\" data-end=\"948\"\u003eSoundstage:\u003c\/strong\u003e scena ordinata e stabile; buona profondità e fuoco preciso sul centro.\u003c\/p\u003e\n\u003ch3 data-start=\"1021\" data-end=\"1056\"\u003e🎧 Uso in Amplificatori Hi-Fi\u003c\/h3\u003e\n\u003cp data-start=\"1057\" data-end=\"1347\"\u003eLa \u003cstrong data-start=\"1060\" data-end=\"1073\"\u003e12AY7 RCA\u003c\/strong\u003e è consigliata per \u003cspan class=\"s1\"\u003e\u003cb\u003estadi di ingresso o driver\u003c\/b\u003e\u003c\/span\u003e dove non sia richiesto un perfetto bilanciamento tra le sezioni e progetti hi-fi che ricercano \u003cstrong data-start=\"1180\" data-end=\"1229\"\u003etrasparenza, basso rumore e coerenza timbrica\u003c\/strong\u003e. Ottima come alternativa più “raffinata” alla 12AX7 quando si desidera un guadagno più contenuto e maggiore headroom.\u003c\/p\u003e\n\u003ch3 data-start=\"1349\" data-end=\"1387\"\u003e🎸 Uso in Amplificatori Musicali\u003c\/h3\u003e\n\u003cp data-start=\"1388\" data-end=\"1695\"\u003eMolto apprezzata in \u003cstrong data-start=\"1408\" data-end=\"1414\"\u003eV1\u003c\/strong\u003e o negli stadi d’ingresso di ampli per chitarra e microfonici, dove offre \u003cstrong data-start=\"1488\" data-end=\"1561\"\u003eclean headroom superiore, compressione naturale e attacco controllato\u003c\/strong\u003e. Perfetta per blues, jazz, studio recording e per chi desidera chiarezza, dinamica morbida e minore saturazione rispetto a una 12AX7.\u003c\/p\u003e\n\u003ch3 data-start=\"1697\" data-end=\"1734\"\u003e🎯 Nota per Audiofili e Tecnici\u003cstrong data-start=\"1737\" data-end=\"1747\"\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eValvola \u003cspan class=\"s1\"\u003e\u003cb\u003eNOS originale RCA\u003c\/b\u003e\u003c\/span\u003e, testata e verificata, con \u003cspan class=\"s1\"\u003e\u003cb\u003esezioni bilanciate\u003c\/b\u003e\u003c\/span\u003e. Ideale per chi cerca il \u003cspan class=\"s1\"\u003e\u003cb\u003ecarattere sonoro RCA\u003c\/b\u003e\u003c\/span\u003e in posizioni critiche. Una \u003cstrong data-start=\"2036\" data-end=\"2051\"\u003eRCA d’epoca\u003c\/strong\u003e equilibrata e affidabile: la firma timbrica americana classica, con eleganza, ordine e naturalezza.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 250V, Vg = -4V\u003cstrong\u003e\u003cbr\u003eMedia 100%:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eGm = 1700 ; Ia = 3.0 mA\u003cstrong\u003e\u003cbr\u003eRISULTATO DEL TEST:\u003c\/strong\u003e FORTE\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvola \u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1\u003c\/strong\u003e: Gm = 1500 ; Ia = 2.3 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2\u003c\/strong\u003e: Gm = 1510 ; Ia = 2.5 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità e Noise:\u003c\/strong\u003e Bassi. Testata e conforme per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra. \u003cstrong\u003eAdatta anche in V1.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBilanciamento:\u003c\/strong\u003e Le sezioni risultano coerenti e ben allineate, rendendo la valvola idonea anche all’impiego come phase inverter in applicazioni hi-fi e strumentali.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003cspan\u003e NOS - New Old Stock - Testata e funzionante - Fornite in nostra scatola personalizzata per una protezione ottimale. \u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e\u003cspan\u003e Eccellenti – Scritte ottimamente conservate, minimi segni del tempo. Vedi foto per i dettagli.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e 73-09 → RMA\/EIA Open Date Code → fabbricata la 9ª settimana del 1973\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":42990263140599,"sku":"03555","price":89.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_040f8910-c58e-4d02-ba49-5af7efe402ce.jpg?v=1777381965"},{"product_id":"7199-sylvania-nos-nib-gray-plates-o-getter-matched-pair-tubes-made-in-usa","title":"7199 SYLVANIA NOS NIB Gray Plates O Getter Matched Pair Tubes Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e7199 SYLVANIA NOS\/NIB Gray Plates O Getter Matched Pair Tubes \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eProdotte da SYLVANIA in USA.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvole testate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test Triodo: Va = 200V ; Vg = -8V\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Triodo Gm = 2100 ; Ia = 9 mA\u003cbr data-mce-fragment=\"1\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test Pentodo: Va = 250V ; Vg2 = 125V ; Vg = -1,5V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Pentodo Gm = 7000\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRisultato del Test: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr data-mce-fragment=\"1\"\u003eTriodo:\u003cspan\u003e \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGm = 2900 ; Ia = 13 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eValvola 2:\u003cbr data-mce-fragment=\"1\"\u003eTriodo:\u003cspan\u003e \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGm = 2800 ; Ia = 13 m\u003cmeta charset=\"utf-8\"\u003eA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eValvola 1\u003cbr data-mce-fragment=\"1\"\u003ePentodo: Gm 7900\u003cbr data-mce-fragment=\"1\"\u003eValvola 2:\u003cbr data-mce-fragment=\"1\"\u003ePentodo: Gm 7500\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest Microfonia\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest per GAS\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":42990583513335,"sku":"00458","price":119.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/7199-sylvania-nos-nib-gray-plates-o-getter-matched-pair-tubes-made-in-usa-597274.jpg?v=1657112813"},{"product_id":"12at7-ecc81-mullard-labeled-ge-gray-plates-o-getter-tested-tube-made-in-gt-britain","title":"12AT7 \/ ECC81 GE by MULLARD Blackburn Wing Gray Plates Halo Getter Tested Tube MADE IN GT. BRITAIN","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong data-end=\"190\" data-start=\"131\"\u003e12AT7 \/ ECC81 GE by Mullard – Blackburn (Great Britain)\u003c\/strong\u003e\u003cbr data-end=\"193\" data-start=\"190\"\u003e\u003cstrong data-end=\"241\" data-start=\"193\"\u003eWing Gray Plates – Halo Getter – Tested Tube\u003c\/strong\u003e\u003cbr data-end=\"244\" data-start=\"241\"\u003e\u003cstrong data-end=\"301\" data-start=\"244\"\u003eLow Noise \u0026amp; Microphonics – Vintage British Production '60s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eLa \u003cspan class=\"s1\"\u003e\u003cb\u003e12AT7 \/ ECC81 GE by MULLARD\u003c\/b\u003e\u003c\/span\u003e, prodotta nello storico stabilimento \u003cspan class=\"s1\"\u003e\u003cb\u003eBlackburn (Great Britain)\u003c\/b\u003e\u003c\/span\u003e nel \u003cspan class=\"s1\"\u003e\u003cb\u003e1963\u003c\/b\u003e\u003c\/span\u003e, è una valvola di segnale di grande pregio, espressione autentica della scuola Mullard inglese destinata al mercato \u003cspan class=\"s1\"\u003e\u003cb\u003eGE\u003c\/b\u003e\u003c\/span\u003e. La costruzione con \u003cspan class=\"s1\"\u003e\u003cb\u003ewing gray plates\u003c\/b\u003e\u003c\/span\u003e e \u003cspan class=\"s1\"\u003e\u003cb\u003ehalo getter\u003c\/b\u003e\u003c\/span\u003e identifica una delle configurazioni più apprezzate della ECC81 britannica dei primi anni ’60, nota per affidabilità, stabilità operativa e carattere sonoro raffinato.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLa valvola è \u003cspan class=\"s1\"\u003e\u003cb\u003etestata\u003c\/b\u003e\u003c\/span\u003e e perfettamente efficiente, pronta per l’impiego in applicazioni hi-fi e musicali di qualità.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eBassi: \u003c\/b\u003eCompatti, ben controllati e ordinati. La gamma bassa è precisa e coerente, con una risposta rapida che mantiene equilibrio e pulizia.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eMedi: \u003c\/b\u003eChiari, presenti e armonicamente ricchi. Le voci risultano naturali e ben scolpite, con quella tipica musicalità Mullard che dona realismo e fluidità.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eAlti: \u003c\/b\u003eAperti, setosi e ben estesi. L’estremo alto è raffinato e mai aggressivo, favorendo un ascolto dettagliato ma rilassante.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eDinamica: \u003c\/b\u003eVivace e controllata. La risposta ai transienti è pronta, con una microdinamica leggibile che rende la riproduzione musicale energica e precisa.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eSoundstage: \u003c\/b\u003eAmpio e ben focalizzato. La scena sonora è stabile, con una corretta separazione degli strumenti e una profondità credibile.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎧 \u003c\/span\u003eUso in Amplificatori Hi-Fi\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIdeale per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003estadi di ingresso e driver,\u003c\/li\u003e\n\u003cli class=\"p1\"\u003epreamplificatori e amplificatori hi-fi che richiedono chiarezza, velocità e controllo,\u003c\/li\u003e\n\u003cli class=\"p1\"\u003esistemi orientati a trasparenza e definizione senza rinunciare alla musicalità.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎸 \u003c\/span\u003eUso in Applicazioni Musicali\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eMolto apprezzata anche in:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eamplificatori per chitarra e strumenti,\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecircuiti dove sono richiesti attacco rapido, definizione e risposta dinamica controllata.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eOffre un carattere brillante ma sempre equilibrato, tipicamente britannico.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎯 \u003c\/span\u003eNota per audiofili e tecnici\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cspan class=\"s2\"\u003eQuesta \u003c\/span\u003e\u003cb\u003e12AT7 \/ ECC81 GE by MULLARD Blackburn – Wing Gray Plates – Halo Getter (1963)\u003c\/b\u003e\u003cspan class=\"s2\"\u003e rappresenta:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003eautentica produzione \u003c\/span\u003e\u003cb\u003eMullard Made in Great Britain\u003c\/b\u003e\u003cspan class=\"s1\"\u003e,\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"p1\"\u003efornitura marchiata GE per il mercato internazionale,\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecostruzione solida e storicamente corretta,\u003c\/li\u003e\n\u003cli class=\"p1\"\u003etimbrica raffinata, veloce e musicale.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eUna valvola pensata per chi desidera \u003cspan class=\"s1\"\u003e\u003cb\u003ela precisione e l’eleganza della ECC81 Mullard\u003c\/b\u003e\u003c\/span\u003e, capace di valorizzare sistemi hi-fi e musicali con coerenza, dettaglio e personalità nel pieno stile \u003cspan class=\"s1\"\u003e\u003cb\u003eVacuum Tubes Treasures\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvola testata su \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e Va = 250V, Vg = -2V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e Gm = 5,5 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e Gm = 4.1 ; Ia = 8.2 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e Gm = 4.5 ; Ia = 9.2 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Low Noise \u0026amp; Microphonics – Testate e conformi per l'uso in sistemi hi-fi e amplificatori per chitarra.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilanciamento:\u003c\/strong\u003e Le sezioni presentano un equilibrio coerente, pienamente compatibile con l’impiego in ambito hi-fi e negli amplificatori musicali, in tutte le applicazioni in cui non sia richiesta una simmetria assoluta tra le sezioni.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità:\u003c\/strong\u003e Perfettamente operative.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche: \u003c\/strong\u003eBuone – Scritte parzialmente erose, ma ancora leggibili. Corpo della valvola in buone condizioni. Vedi foto per i dettagli.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e TK3 B3A2 → \u003cmeta charset=\"utf-8\"\u003eTKx indica un ECC81 con la progressione sequenziale di x, ove l'incremento di x indica le modifiche di produzione - \u003cmeta charset=\"utf-8\"\u003eB3A2 B → Mullard, Blackburn - 3 (su quattro cifre ) → 1963 - A → Gennaio - 2 → 2a settimana del mese\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"MULLARD","offers":[{"title":"Default Title","offer_id":42997037170935,"sku":"00768S","price":44.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_ef38e5a4-ec19-4bc2-8259-788a1456ea9e.jpg?v=1770040654"},{"product_id":"201-a-01-a-silvertone-globe-radio-tubes-test-nos-specs-matched-tubes-made-in-usa-20s","title":"201-A ( 01-A ) SILVERTONE Globe Atwater Kent Radio Tubes Test @ NOS specs Matched Tubes Made in USA '20s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e201-A ( 01-A ) SILVERTONE Globe Atwater Kent Radio Tubes Test @ NOS Matched Tubes Made in USA '20s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLe basi sono ferme e non ci sono elementi liberi nei tubi o nelle basi.\u003c\/p\u003e\n\u003cp\u003eTestate su AVO CT 160 Tube tester:\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test: Va = 150V; Vg = -9V\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Gm = 800 ; Ia = 3 mA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1: Gm = 900 ; Ia = 5 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 2: Gm = 900 ; Ia = 4 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 3: Gm = 1000 ; Ia = 6 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 4: Gm = 1050 ; Ia = 6 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 5: Gm = 1000 ; Ia = 5 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr data-mce-fragment=\"1\"\u003eTest Microfonicità\u003cbr data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003cbr data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003cbr\u003e\u003c\/p\u003e","brand":"SILVERTONE","offers":[{"title":"Default Title","offer_id":43061454733559,"sku":"00790T","price":279.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/201-a-01-a-silvertone-globe-radio-tubes-test-at-nos-specs-matched-tubes-made-in-usa-20s-369171.jpg?v=1658939682"},{"product_id":"copia-del-7199-sylvania-nos-nib-gray-plates-o-getter-matched-pair-tubes-made-in-usa","title":"7199 SYLVANIA Gray Plates O Getter Matched Pair Tubes Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e7199 SYLVANIA Gray Plates O Getter Matched Pair Tubes \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eProdotte da SYLVANIA in USA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvole testate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test Triodo: Va = 200V ; Vg = -8V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Triodo Gm = 2100 ; Ia = 9 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test Pentodo: Va = 250V ; Vg2 = 125V ; Vg = -1,5V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Pentodo Gm = 7000\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-mce-fragment=\"1\"\u003eRisultato del Test:  FORTE\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eValvola 1:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTriodo: \u003cmeta charset=\"utf-8\"\u003eGm = 2300 ; Ia = 9 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eValvola 2:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTriodo: \u003cmeta charset=\"utf-8\"\u003eGm = 1700 ; Ia = 7 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eValvola 1\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePentodo: Gm 5600\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eValvola 2:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePentodo: Gm 5400\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest Microfonia\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest per GAS\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":43115199168759,"sku":"00809","price":89.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/7199-sylvania-gray-plates-o-getter-matched-pair-tubes-made-in-usa-995518.jpg?v=1660166921"},{"product_id":"7643-e80cf-amperex-mullard-mitcham-plant-matched-pair-tubes-made-in-gt-britain","title":"7643 ( E80CF ) MULLARD Mitcham plant Gold Pin Matched Pair Tubes MADE in GT. BRITAIN","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e7643 ( E80CF ) MULLARD Mitcham plant Gold Pin Matched Pair Tubes MADE in GT. BRITAIN\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStesso Codice di fabbricazione: \u003cbr\u003eBG2 R4J2\u003c\/p\u003e\n\u003cp\u003ePRODOTTE DA MULLARD UK, etichettate AMPEREX\u003c\/p\u003e\n\u003cp\u003eValvole testate su AVO VCM 163 Tube tester:\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test: \u003cbr\u003eTriodo Va = 100V, Vg = -2V\u003cbr\u003ePentodo \u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVa = 200V, \u003cmeta charset=\"utf-8\"\u003eVg2 = 175V, Vg = -2V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Triodo Gm = 5000 ; Ia = 14 mA\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Pentodo \u003cmeta charset=\"utf-8\"\u003eGm = 6200 ; Ia = 10 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRisultato del Test: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1\u003cbr data-mce-fragment=\"1\"\u003eSezione 1: Gm 5100 ; Ia 13,5 mA\u003cbr data-mce-fragment=\"1\"\u003eSezione 2: Gm 6000 ; Ia 12,0 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 2:\u003cbr data-mce-fragment=\"1\"\u003eSezione 1: Gm 5100 ; Ia 14,0 mA\u003cbr data-mce-fragment=\"1\"\u003eSezione 2: Gm 6000 ; Ia 13,0 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr data-mce-fragment=\"1\"\u003eTest Microfonicità\u003cbr data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003cbr data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003cbr\u003e\u003c\/p\u003e","brand":"MULLARD","offers":[{"title":"Default Title","offer_id":43150717583607,"sku":"00822T","price":59.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/7643-e80cf-amperex-mullard-mitcham-plant-gold-pin-matched-pair-tubes-made-in-gt-britain-224716.jpg?v=1660945616"},{"product_id":"301-a-01-a-cunningham-globe-atwater-kent-radio-tubes-test-nos-specs-matched-tubes-made-in-usa-20s","title":"CX-301-A ( 01-A ) CUNNINGHAM Globe Atwater Kent Radio Tubes Test @ NOS specs Tubes Made in USA '20s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eCX-301-A ( 01-A ) CUNNINGHAM Globe Atwater Kent Radio Tubes Test @ NOS specs Tubes Made in USA '20s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLe basi sono strette e non ci sono elementi liberi nei tubi o nelle basi.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AVO CT 160 Tube tester:\u003c\/strong\u003e\u003cbr\u003eI nostri strumenti sono calibrati con tubi di riferimento.\u003cbr\u003eVoltage Test: Va = 150V; Vg = -9V\u003cbr\u003eMedia 100% Gm = 800 ; Ia = 3 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eValvola 1: Gm = 1000 ; Ia = 5,0 mA\u003cmeta charset=\"utf-8\"\u003e  - VENDUTA\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eValvola 2: Gm = 1000 ; Ia = 6,0 mA  - VENDUTA\u003c\/span\u003e\u003cbr\u003eValvola 3: Gm = 1000 ; Ia = \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e6,0\u003c\/span\u003e mA\u003cbr\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eValvola 4: Gm = 1100 ; Ia = \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e6,0\u003c\/span\u003e mA\u003cmeta charset=\"utf-8\"\u003e  - VENDUTA\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003eValvola 5: Gm = 1000 ; Ia = 5,5 mA\u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e  - VENDUTA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonicità\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003c\/p\u003e","brand":"CUNNINGHAM","offers":[{"title":"Default Title","offer_id":43163435401463,"sku":"00828T","price":55.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_e39ab3da-336c-4d7a-a1b8-34970e607f5b.jpg?v=1733064435"},{"product_id":"ux-201-a-01-a-rca-globe-atwater-kent-radio-tubes-test-nos-specs-matched-tubes-made-in-usa-20s","title":"UX-201-A ( 01-A ) RCA Globe Atwater Kent Radio Tubes Test @ NOS specs Matched Tubes Made in USA '20s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eUX-201-A ( 01-A ) RCA Globe Atwater Kent Radio Tubes Test @ NOS Matched Tubes Made in USA '20s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLe basi sono ferme e non ci sono elementi liberi nei tubi o nelle basi.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eNota: Una delle due valvole presenta una crepa visibile sulla base in plastica (vedi foto), che non ne pregiudica il funzionamento\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eTestate su AVO CT 160 Tube tester:\u003cbr\u003eVoltage Test: Va = 150V; Vg = -9V\u003cbr\u003eMedia 100% Gm = 800 ; Ia = 3 mA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1: Gm = 1000 ; Ia = 5,0 mA\u003cbr\u003eValvola 2: Gm = 1100 ; Ia = 7,0 mA\u003cbr\u003eValvola 3: Gm = 1000 ; Ia = 5\u003cspan\u003e,0\u003c\/span\u003e mA\u003cbr\u003eValvola 4: Gm = 1000 ; Ia = 5\u003cspan\u003e,0\u003c\/span\u003e mA\u003cbr\u003eValvola 5: Gm = 1100 ; Ia = 6,0 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonicità\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":43163602845943,"sku":"00829T","price":279.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/ux-201-a-01-a-rca-globe-atwater-kent-radio-tubes-test-at-nos-specs-matched-tubes-made-in-usa-20s-281774.jpg?v=1661267984"},{"product_id":"ux-201-a-01-a-rca-globe-atwater-kent-radio-tubes-test-nos-specs-matched-tubes-made-in-usa-20s-1","title":"UX-201-A ( 01-A ) RCA Globe Atwater Kent Radio Tubes Test @ NOS specs Matched Tubes Made in USA '20s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eUX-201-A ( 01-A ) RCA Globe Atwater Kent Radio Tubes Test @ NOS Matched Tubes Made in USA '20s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLe basi sono ferme e non ci sono elementi liberi nei tubi o nelle basi.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/p\u003e\n\u003cp\u003eTestate su AVO VCM 163 Tube tester:\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test: Va = 150V; Vg = -9V\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Gm = 800 ; Ia = 3 mA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1: Gm = 900 ; Ia = 5,5 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 2: Gm = 800 ; Ia = 4,0 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 3: Gm = 800 ; Ia = 4,0 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 4: Gm = 800 ; Ia = 5,7 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 5: Gm = 800 ; Ia = 5,0 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr data-mce-fragment=\"1\"\u003eTest Microfonicità\u003cbr data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003cbr data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":43183801696503,"sku":"00839T","price":279.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/ux-201-a-01-a-rca-globe-atwater-kent-radio-tubes-test-at-nos-specs-matched-tubes-made-in-usa-20s-527475.jpg?v=1661778090"},{"product_id":"12av7-rca-black-plates-o-getter-matched-tubes-made-in-usa","title":"12AV7 RCA Black Plates O Getter Matched Pair Tubes Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AV7 RCA Black Plates O Getter Matched Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e Made in USA\u003c\/strong\u003e\u003cbr\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eProdotte da RCA - USA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eTestate su \u003cstrong\u003eAVO VCM 163\u003c\/strong\u003e Tube tester:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test: Va = 150V, Vg = -1V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Gm = 8,5 ; Ia = 18 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST:  MOLTO FORTE\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 1:\u003c\/strong\u003e\u003cbr\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 1: Gm 7,0 ; Ia = 22 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 2: Gm 6,8 ; Ia = 19 mA\u003c\/span\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eValvola 2:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 1: Gm 7,7 ; Ia = 19 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 2: Gm 8,3 ; Ia = 22 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest Microfonicità\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":43442370642167,"sku":"00949T","price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/12av7-rca-black-plates-o-getter-matched-tubes-made-in-usa-193264.jpg?v=1665667270"},{"product_id":"12at7wa-6101-ge-nos-wing-gray-plates-o-getter-tested-tube-made-in-usa","title":"12AT7 WA ( 6201 ) GE NOS Wing Gray Plates O Getter Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AT7WA ( 6201 ) GE NOS Wing Gray Plates O Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQueste valvole offrono un suono caratterizzato da una notevole chiarezza e dettaglio, con una gamma media ben bilanciata e un'estensione delle alte frequenze ariosa e brillante. Questa versione con placche grigie, presenta un tono leggermente caldo, senza perdere in definizione, risultando perfetta per chi cerca un equilibrio tra precisione e musicalità. Ideali per applicazioni audio Hi-Fi e strumenti musicali, garantiscono una riproduzione sonora ricca e articolata.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eProdotte da GENERAL ELECTRIC in USA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDestinazione Militare\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLoghi usurati come da foto\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eTestate su AVO VCM 163 Tube tester:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test: Va = 250V ; Vg = -2V ; Vf = 6,3V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Gm = 5,5 ; Ia = 10 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 1: Gm = 5,7 ; Ia = 11 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 2: Gm = 5,6 ; Ia = 10 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest Microfonia\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":43766463070455,"sku":"01194T","price":29.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/1_9b1daa4c-e75f-4e8d-8dd7-a046565b3417.jpg?v=1677494197"},{"product_id":"12at7-ecc81-raytheon-black-wing-tilt-getter-matched-tubes-made-in-usa-50s","title":"12AT7 ( ECC81 ) RAYTHEON Black Wing [] Tilt Getter Tested Tube Made In USA '50s","description":"\u003cp\u003e\u003cstrong\u003e12AT7 ( ECC81 ) RAYTHEON Black Wing [] Tilt Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade In USA '50s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da RAYTHEON in USA.\u003c\/p\u003e\n\u003cp\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AVO VCM 163 Tube tester:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test: Va = 250V ; Vg = -2V ; Vf = 6,3V\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Gm = 5,5 ; Ia = 10 mA\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST:  MOLTO FORTE\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGm = 4,0 ; Ia = 10 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGm = 4,2 ; Ia = 10 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003cbr data-mce-fragment=\"1\"\u003eTest Microfonia\u003cbr data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003cbr data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/p\u003e","brand":"RAYTHEON","offers":[{"title":"Default Title","offer_id":43766628679927,"sku":"01196U","price":29.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/1_b145fdd3-9fe8-41f3-bd78-9dafff92ff5e.jpg?v=1677507309"},{"product_id":"12by7a-el180-ge-nos-black-plates-halo-getter-tubes-tektronix-checked","title":"12BY7A ( EL180 ) GE NOS Black Plates Halo Getter Matched Tubes by TEKTRONIX","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12BY7A ( EL180 ) GE NOS Black Plates Halo Getter Matched Tubes by TEKTRONIX \u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003e\u003cspan data-mce-fragment=\"1\"\u003eMade in USA\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMatched by \u003cmeta charset=\"utf-8\"\u003eTEKTRONIX INC. USA - Codici seriali corrispondenti\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eStesso lotto di fabbricazione\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test: Va = 250V, Vg2 = 180V; Vg = -3,2V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Gm = 11 ; Ia = 26 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGm = 13,3\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e ; Ia = 30\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e mA\u003c\/span\u003e\u003cbr\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cmeta charset=\"utf-8\"\u003eValvola 2:\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eGm = 14,2 ; Ia = 31 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest Microfonia\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":46487481581916,"sku":"01324","price":59.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/products\/1_f748304b-ccae-401e-a71d-f0986d3815f2.jpg?v=1681461850"},{"product_id":"12by7a-el180-rca-nos-nib-gray-plates-o-solid-getter-tubes","title":"5847A JAN ( 404A ) AMPEREX NOS NIB Black Plates Halo Getter Gold Pin Tubes Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e5847A JAN ( 404A ) AMPEREX NOS NIB Black Plates Halo Getter Gold Pin Tubes\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eL'offerta è per 5 valvole selezionate testate ( 5 pz ).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eTestate su AVO VCM 163 Tube tester:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eVoltage Test: Va = 150V, Vg2 = 150V; Vg = -2V\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMedia 100% Gm = 12,5 ; Ia = 13 mA\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRisultati del Test vedi foto\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest Microfonia\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"AMPEREX","offers":[{"title":"Default Title","offer_id":46663270760796,"sku":"01385","price":59.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_8946cbab-b097-4b5c-b352-60ee7c51e49e.jpg?v=1683300596"},{"product_id":"6sn7gta-ge-labeled-raytheon-gray-plates-tested-tube-made-in-usa-52","title":"6SN7 GTA RAYTHEON Gray Plates Horse Shoe Getter Tested Tube Made in USA '54","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003e6SN7GTA RAYTHEON Gray Plates Horse Shoe Getter Tested Tube\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eMADE IN USA ’54\u003c\/strong\u003e\u003c\/span\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eFabbricazione General Electric U.S.A. etichettate per RAYTHEON U.S.A.\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eLow Noise \u0026amp; Microphonics\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test: Va = 250V, Vg = -8V, Vf = 6,3V\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Gm = 2600 ; Ia = 9,0 mA\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2350 ; Ia = 7,8 mA\u003cbr data-mce-fragment=\"1\"\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2250 ; Ia = 6,0 mA\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia e rumore di fondo\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/span\u003e\u003c\/p\u003e","brand":"RAYTHEON","offers":[{"title":"Default Title","offer_id":46669635453276,"sku":"01390","price":22.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_a448ebfa-ab22-4768-ad52-55ad40889fbf.jpg?v=1720796014"},{"product_id":"5963-ecc82-12au7-sylvania-halo-getter-long-plates-tested-balanced-tube-made-in-usa-50s","title":"5963 ( 12AU7 ) SYLVANIA Halo Getter Long Plates Tested Tube Made in USA '50s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e5963 ( 12AU7 ) SYLVANIA Halo Getter Long Plates Tested Tube Made in USA '50s\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"770\" data-start=\"364\"\u003eQuesta \u003cstrong data-end=\"404\" data-start=\"371\"\u003e5963 (12AU7 \/ ECC82) SYLVANIA\u003c\/strong\u003e, prodotta negli Stati Uniti negli anni ’50, rappresenta una delle interpretazioni più raffinate e tecnicamente solide della 12AU7 americana d’epoca.\u003cbr data-end=\"556\" data-start=\"553\"\u003eLa costruzione con \u003cstrong data-end=\"590\" data-start=\"575\"\u003elong plates\u003c\/strong\u003e e \u003cstrong data-end=\"608\" data-start=\"593\"\u003ehalo getter\u003c\/strong\u003e è tipica delle produzioni Sylvania di alta qualità, apprezzate per l’equilibrio tra affidabilità operativa, trasparenza sonora e comportamento lineare nel tempo.\u003c\/p\u003e\n\u003cp data-end=\"982\" data-start=\"772\"\u003eValvola \u003cstrong data-end=\"805\" data-start=\"780\"\u003etestata e selezionata\u003c\/strong\u003e, con emissione stabile e rumore di fondo contenuto, pensata per applicazioni audio hi-fi e professionali dove siano richieste coerenza, controllo e musicalità priva di eccessi.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1196\" data-start=\"1058\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eBassi: \u003c\/strong\u003ePrecisi e ben controllati. La gamma bassa è asciutta, ordinata e priva di enfasi artificiale, favorendo chiarezza e articolazione ritmica.\u003c\/li\u003e\n\u003cli data-end=\"1408\" data-start=\"1213\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eMedi: \u003c\/strong\u003eAperti e naturali. Le voci e gli strumenti acustici risultano correttamente proporzionati, con una resa pulita e leggibile, tipicamente Sylvania: meno “calda” di RCA, ma più neutra e trasparente.\u003c\/li\u003e\n\u003cli data-end=\"1551\" data-start=\"1425\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eAlti: \u003c\/strong\u003eChiari e ben estesi. L’estremo alto è arioso e definito, senza asprezze, con un dettaglio elegante che non affatica l’ascolto.\u003c\/li\u003e\n\u003cli data-end=\"1699\" data-start=\"1572\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eDinamica: \u003c\/strong\u003eEquilibrata e regolare. La risposta è pronta ma composta, ideale per stadi di linea, driver e sezioni di controllo del segnale.\u003c\/li\u003e\n\u003cli data-end=\"1858\" data-start=\"1722\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eSoundstage: \u003c\/strong\u003eScena ordinata e ben focalizzata. Corretta separazione dei piani sonori e immagine stabile, con una presentazione realistica e coerente.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1884\" data-end=\"1924\"\u003e🎧 Uso in Amplificatori Hi-Fi Stereo\u003c\/h3\u003e\n\u003cp data-end=\"1917\" data-start=\"1906\"\u003eIdeale per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"1955\" data-start=\"1920\"\u003epreamplificatori e stadi di linea\u003c\/li\u003e\n\u003cli data-end=\"1994\" data-start=\"1958\"\u003ebuffer e circuiti di accoppiamento\u003c\/li\u003e\n\u003cli data-end=\"2065\" data-start=\"1997\"\u003eamplificatori hi-fi vintage e moderni compatibili con 12AU7 \/ 5963\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2232\" data-start=\"2067\"\u003eParticolarmente indicata per \u003cstrong data-end=\"2144\" data-start=\"2096\"\u003eposizioni non critiche o a guadagno moderato\u003c\/strong\u003e, dove sono richieste stabilità operativa, basso rumore complessivo e coerenza timbrica.\u003c\/p\u003e\n\u003ch3 data-start=\"2243\" data-end=\"2293\"\u003e🎸 Uso in Amplificatori per Strumenti Musicali\u003c\/h3\u003e\n\u003cp data-end=\"2287\" data-start=\"2276\"\u003eAdatta per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"2345\" data-start=\"2290\"\u003eposizioni di \u003cstrong data-end=\"2313\" data-start=\"2303\"\u003edriver\u003c\/strong\u003e, \u003cstrong data-end=\"2333\" data-start=\"2315\"\u003ephase inverter\u003c\/strong\u003e o V2 \/ V3\u003c\/li\u003e\n\u003cli data-end=\"2384\" data-start=\"2348\"\u003eamplificatori per chitarra e basso\u003c\/li\u003e\n\u003cli data-end=\"2436\" data-start=\"2387\"\u003eapplicazioni in studio e contesti professionali\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"2672\" data-start=\"2438\"\u003eOffre un funzionamento affidabile e controllato, con rumore contenuto e risposta prevedibile.\u003cbr data-end=\"2534\" data-start=\"2531\"\u003eSi consiglia di evitarne l’uso in \u003cstrong data-end=\"2603\" data-start=\"2568\"\u003eV1 o in stadi ad altissimo gain\u003c\/strong\u003e, dove sono preferibili valvole specificamente selezionate low-noise.\u003c\/p\u003e\n\u003ch3 data-start=\"2566\" data-end=\"2601\"\u003e🎯 Nota per audiofili e tecnici\u003c\/h3\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eUna \u003cstrong data-end=\"2745\" data-start=\"2719\"\u003e5963 Sylvania anni ’50\u003c\/strong\u003e ben costruita e ben testata, pensata per chi ricerca \u003cstrong data-end=\"2839\" data-start=\"2799\"\u003eneutralità, controllo e affidabilità\u003c\/strong\u003e, con il classico approccio americano più lineare e trasparente rispetto alle controparti più “calde”.\u003cbr data-end=\"2944\" data-start=\"2941\"\u003eUna scelta razionale e musicale per sistemi hi-fi e applicazioni professionali.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvola testata su \u003cstrong\u003eAMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e\u003cspan\u003e Va = 250V ; Vg = -8.5V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e MOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2200 ; Ia = 9.4 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 8.4 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Microfonicità e Noise: Molto Bassi. Testate e conformi per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra. Adatte anche in V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBilanciamento:\u003c\/strong\u003e Le due sezioni mostrano valori coerenti e ben allineati, rendendo la valvola ideale anche come phase inverter in applicazioni hi-fi e strumentali.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni: \u003c\/strong\u003eVintage - Testata e funzionante - Fornite in nostra scatola personalizzata per una protezione ottimale. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e Buone – Scritte parzialmente erose, ma ancora leggibili. Corpo della valvola in buone condizioni. Vedi foto per i dettagli.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e non decifrabile – produzione SYLVANIA USA, identificabile per caratteristiche costruttive. Anni ’50\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":46757909594460,"sku":"01465","price":19.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_adf9bc4b-da4b-4d8a-8e13-b5f37d7acf5e.jpg?v=1767635953"},{"product_id":"12au7-ecc82-raytheon-long-black-plates-square-getter-tested-tube-made-in-usa-58","title":"12AU7 ECC82 RAYTHEON Long Black Plates Square Getter Tested Tube Made in USA '58","description":"\u003cp\u003e\u003cstrong\u003e12AU7 ( ECC82 ) RAYTHEON Long Black Plates Square Getter Tested Tube Made in USA '58\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eLa \u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7 \/ ECC82 RAYTHEON\u003c\/b\u003e\u003c\/span\u003e con \u003cspan class=\"s1\"\u003e\u003cb\u003elong black plates\u003c\/b\u003e\u003c\/span\u003e e \u003cspan class=\"s1\"\u003e\u003cb\u003esquare getter\u003c\/b\u003e\u003c\/span\u003e, prodotta negli Stati Uniti nel \u003cspan class=\"s1\"\u003e\u003cb\u003e1958\u003c\/b\u003e\u003c\/span\u003e, è una delle versioni più raffinate e ricercate di questo doppio triodo a medio guadagno. La costruzione con \u003cspan class=\"s1\"\u003e\u003cb\u003eplacche nere lunghe\u003c\/b\u003e\u003c\/span\u003e è tipica delle migliori produzioni americane di fine anni ’50 e conferisce a questa valvola una personalità sonora solida, profonda e particolarmente musicale.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eL’esemplare è stato accuratamente verificato nel nostro laboratorio ed ha superato i test con esito \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e, mostrando un comportamento elettrico eccellente. La valvola è inoltre \u003cspan class=\"s1\"\u003e\u003cb\u003ebilanciata\u003c\/b\u003e\u003c\/span\u003e, con \u003cspan class=\"s1\"\u003e\u003cb\u003erumore e microfonicità molto contenuti\u003c\/b\u003e\u003c\/span\u003e, rendendola adatta anche a posizioni sensibili del circuito.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eBassi: \u003c\/b\u003eCorposi, pieni e ben articolati. Il registro basso è autorevole ma sempre controllato, con un senso di profondità che dona solidità all’intera gamma.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eMedi: \u003c\/b\u003eIl punto di forza di questa Raytheon. I medi sono densi, naturali e ricchi di sfumature, con una resa delle voci estremamente credibile e materica.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eAlti: \u003c\/b\u003eMorbidi e ben integrati, mai aggressivi. L’estremo alto è presente ma educato, favorendo ascolti prolungati senza affaticamento.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eDinamica: \u003c\/b\u003eFluida e composta. La risposta ai transienti è naturale, con una progressione armoniosa che privilegia la musicalità rispetto all’impatto artificiale.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003e\u003cb\u003eSoundstage: \u003c\/b\u003eScena sonora stabile e ben proporzionata, con un’ottima separazione degli strumenti e una messa a fuoco precisa.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎧 Uso in Amplificatori Hi-Fi\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIdeale come valvola di linea, driver o stadio di preamplificazione in amplificatori e preamplificatori hi-fi di qualità. La bassa rumorosità e il buon bilanciamento la rendono adatta anche a sistemi ad alta risoluzione.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e🎸 Uso in Applicazioni Musicali\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eApprezzata anche in ambito musicale per il suo carattere caldo e controllato, perfetta dove si desideri una risposta equilibrata e una resa armonica ricca.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e🎯 Nota per audiofili e tecnici\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eprodotta negli USA nel 1958,\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003etestata \u003c\/span\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003cspan class=\"s1\"\u003e,\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cb\u003ebilanciata\u003c\/b\u003e\u003cspan class=\"s1\"\u003e,\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\n\u003cspan class=\"s1\"\u003econ \u003c\/span\u003e\u003cb\u003elow noise \u0026amp; low microphonics\u003c\/b\u003e\u003cspan class=\"s1\"\u003e,\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eselezionata per applicazioni di livello superiore.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eUna valvola che esprime al meglio il carattere classico americano Raytheon, pensata per chi cerca \u003cspan class=\"s1\"\u003e\u003cb\u003emusicalità, affidabilità e una timbrica autorevole\u003c\/b\u003e\u003c\/span\u003e, nel pieno stile \u003cspan class=\"s1\"\u003e\u003cb\u003eVacuum Tubes Treasures\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvola testata su\u003cstrong\u003e AMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eVa = 250V, Vg = -8.5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1900 ; Ia = 9.6 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1900 ; Ia = 9.8 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e\u003cspan\u003e Bassa. Testate e conformi per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra. Adatte anche in V1.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBilanciamento: \u003c\/strong\u003eLe sezioni risultano coerenti e ben allineate, rendendo la valvola idonea anche all’impiego come phase inverter in applicazioni hi-fi e strumentali.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePerfettamente operative.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eAssenti.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003cspan\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale.\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e Eccellenti – Scritte ottimamente conservate, minimi segni del tempo. Vedi foto per i dettagli.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e 280 58-17 → 280 indica il fabbricante, ovvero Raytheon Mfg. Company, Newton 58, Mass. - 58-17 → RMA\/EIA Open Date Code → fabbricata la 17ª settimana del 1958\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RAYTHEON","offers":[{"title":"Default Title","offer_id":46862086504796,"sku":"01536","price":49.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_545aa3f3-0b61-4e7f-a098-75c937a54a5d.jpg?v=1769605616"},{"product_id":"12ax7-ecc83-sylvania-long-plates-square-getter-tested-tube-made-in-usa-nel-1949","title":"12AX7 ( ECC83 ) SYLVANIA Long Gray plates Square Getter Tested Tube Made in USA nel 1949","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AX7 ( ECC83 ) SYLVANIA Long Gray plates Square Getter Tested Tube \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA nel 1949 \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eLa 12AX7 SYLVANIA a marchio Baldwin si distingue per la sua eccezionale qualità sonora. Caratterizzata da un suono ricco, caldo e dettagliato, questa valvola offre una risposta in frequenza estesa e una dinamica superba. \u003cstrong\u003eGli audiofili apprezzano la sua capacità di riprodurre fedelmente sia i toni più delicati che quelli più potenti\u003c\/strong\u003e, conferendo alla musica una presenza e una profondità straordinarie.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLa \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e12AX7 SYLVANIA a marchio Baldwin\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eè comunemente utilizzata anche nell'ambito degli \u003c\/span\u003e\u003cstrong\u003eamplificatori valvolari per chitarra elettrica\u003c\/strong\u003e\u003cspan\u003e in una vasta gamma di generi musicali, tra cui rock, blues, jazz, country e molti altri. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eQuesta rara versione con getter quadrato riesce a superare in raffinatezza le eccellenti prestazioni della versione halo getter. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvola con sezioni bilanciate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProdotte da SYLVANIA etichettate Baldwin. \u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLoghi usurati come da foto\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test: Va = 250V, Vg = -2V, Vf = 6,3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Gm = 1600 ; Ia = 1,2 mA\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 1500 ; Ia = 1,0 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 1500 ; Ia = 1,0 mA\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest Microfonia\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per GAS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":46862685077852,"sku":"01538V","price":56.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_8332b39c-d4ed-410f-9fb4-ab97bf1da00c.jpg?v=1693225723"},{"product_id":"12au7-ecc82-sylvania-gray-plates-square-getter-matched-tubes-made-in-usa-47","title":"12AU7 ( ECC82 ) SYLVANIA NOS Short Gray Plates Square Getter Tested Tube Made in USA '47","description":"\u003cp\u003e\u003cstrong\u003e12AU7 ( ECC82 ) SYLVANIA NOS Short Gray Plates Square Getter Tested Tube Made in USA '47\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNota: Il Prezzo si riferisce a una valvola selezionata\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"569\" data-start=\"32\"\u003e\u003cmeta charset=\"utf-8\"\u003eQuesta \u003cstrong data-start=\"37\" data-end=\"67\"\u003e12AU7 \/ ECC82 SYLVANIA NOS\u003c\/strong\u003e, \u003cstrong data-start=\"69\" data-end=\"89\"\u003eMade in USA 1947\u003c\/strong\u003e, appartiene alle \u003cstrong data-start=\"107\" data-end=\"141\"\u003eprimissime produzioni storiche\u003c\/strong\u003e di questa valvola, realizzate nell’immediato dopoguerra secondo standard costruttivi estremamente elevati. La configurazione con \u003cstrong data-start=\"271\" data-end=\"292\"\u003eshort gray plates\u003c\/strong\u003e e \u003cstrong data-start=\"295\" data-end=\"312\"\u003esquare getter\u003c\/strong\u003e identifica una variante molto precoce, oggi rara, apprezzata per solidità meccanica, stabilità operativa e carattere sonoro di grande finezza.\u003cbr data-start=\"455\" data-end=\"458\"\u003eLa valvola è \u003cstrong data-start=\"471\" data-end=\"482\"\u003etestata\u003c\/strong\u003e e perfettamente efficiente, trasmettendo fin dalle prime note la sensazione di un componente autentico, selezionato e di grande valore storico.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"658\" data-end=\"814\"\u003e\u003cstrong data-start=\"658\" data-end=\"667\"\u003eBassi: \u003c\/strong\u003ePuliti, ben controllati e naturali. La gamma bassa è composta e coerente, con una risposta ordinata che sostiene la musica senza appesantimenti.\u003c\/p\u003e\n\u003cp data-start=\"816\" data-end=\"995\"\u003e\u003cstrong data-start=\"816\" data-end=\"824\"\u003eMedi: \u003c\/strong\u003eIl tratto distintivo di questa produzione. Ricchi, fluidi e molto realistici, con voci presenti e una tessitura armonica elegante, tipica delle prime Sylvania anni ’40.\u003c\/p\u003e\n\u003cp data-start=\"997\" data-end=\"1143\"\u003e\u003cstrong data-start=\"997\" data-end=\"1005\"\u003eAlti: \u003c\/strong\u003eDolci, setosi e perfettamente integrati. L’estremo alto è raffinato e mai aggressivo, favorendo un ascolto rilassato e di lunga durata.\u003c\/p\u003e\n\u003cp data-start=\"1145\" data-end=\"1302\"\u003e\u003cstrong data-start=\"1145\" data-end=\"1157\"\u003eDinamica: \u003c\/strong\u003eEquilibrata e scorrevole. La risposta è pronta ma sempre controllata, con una microdinamica naturale che restituisce vitalità senza forzature.\u003c\/p\u003e\n\u003cp data-start=\"1304\" data-end=\"1459\"\u003e\u003cstrong data-start=\"1304\" data-end=\"1318\"\u003eSoundstage: \u003c\/strong\u003eStabile, arioso e ben proporzionato. La scena sonora è credibile, con una disposizione naturale degli strumenti e una profondità coerente.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e🎧 Uso in Amplificatori Hi-Fi\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIdeale per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1513\" data-end=\"1565\"\u003epreamplificatori e stadi di linea di alto livello,\u003c\/li\u003e\n\u003cli data-start=\"1568\" data-end=\"1620\"\u003edriver in amplificazioni single-ended e push-pull,\u003c\/li\u003e\n\u003cli data-start=\"1623\" data-end=\"1700\"\u003esistemi hi-fi che privilegiano naturalezza, musicalità e coerenza timbrica.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1702\" data-end=\"1772\"\u003eParticolarmente indicata per jazz, vocale, classica e musica acustica.\u003c\/p\u003e\n\u003ch3 data-start=\"1774\" data-end=\"1825\"\u003e\u003cstrong\u003e🎸 Uso in Applicazioni Musicali\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1774\" data-end=\"1825\"\u003eAdatta per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1828\" data-end=\"1896\"\u003eamplificatori per strumenti in stadi di driver o circuiti vintage,\u003c\/li\u003e\n\u003cli data-start=\"1899\" data-end=\"1975\"\u003eprogetti boutique che ricercano un carattere sonoro autentico e raffinato.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1977\" data-end=\"2033\"\u003eOffre un suono pieno, controllato e armonicamente ricco.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e🎯 Nota per audiofili e tecnici\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2035\" data-end=\"2168\"\u003eQuesta \u003cstrong data-start=\"2080\" data-end=\"2153\"\u003e12AU7 \/ ECC82 SYLVANIA NOS – Short Gray Plates – Square Getter (1947)\u003c\/strong\u003e rappresenta:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"2171\" data-end=\"2235\"\u003euna \u003cstrong data-start=\"2175\" data-end=\"2232\"\u003eproduzione americana estremamente precoce e oggi rara\u003c\/strong\u003e,\u003c\/li\u003e\n\u003cli data-start=\"2238\" data-end=\"2290\"\u003equalità costruttiva Sylvania del primo dopoguerra,\u003c\/li\u003e\n\u003cli data-start=\"2293\" data-end=\"2340\"\u003ecomportamento elettrico stabile e affidabile,\u003c\/li\u003e\n\u003cli data-start=\"2343\" data-end=\"2397\"\u003etimbrica elegante, naturale e storicamente corretta.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2399\" data-end=\"2606\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eUna valvola pensata per chi desidera \u003cstrong data-start=\"2436\" data-end=\"2462\"\u003enon solo una 12AU7 NOS\u003c\/strong\u003e, ma \u003cstrong data-start=\"2467\" data-end=\"2515\"\u003eun’autentica esperienza sonora delle origini\u003c\/strong\u003e, capace di valorizzare sistemi hi-fi di alto livello con classe e personalità senza tempo.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvola testata su \u003cstrong\u003eAMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e\u003cspan\u003e Va = 250V ; Vg = -8.5V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e MOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2050 ; Ia = 9.5 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2050 ; Ia = 9.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 3:  \u003cmeta charset=\"utf-8\"\u003eVENDUTO\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 9.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 9.5 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 4:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2000 ; Ia = 9.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2050 ; Ia = 9.5 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 5:  VENDUTO\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2150 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 6:  VENDUTO\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2150 ; Ia = 10.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2100 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Bassa. Testate e conformi per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra. Adatte anche in V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e NOS - New Old Stock - Testata e funzionante - Fornite in nostra scatola personalizzata per una protezione ottimale. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e Eccellenti – Scritte ottimamente conservate, minimi segni del tempo. Vedi foto per i dettagli.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e 502 752 → 502 (origine amministrativa) fabbricate da Sylvania per American Radio Hardware Co., Inc., Mt. Vernon, N. Y. - 752 → 2 ( su tre cifre ) → 1947 - 52 → 52a settimana dell'anno\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":46899306496348,"sku":"01551T","price":24.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/8_dab47132-4583-48a6-a7ec-dc77ffb35acc.jpg?v=1769450112"},{"product_id":"12ax7-ecc83-tungsram-short-gray-plate-dual-post-o-getter-matched-tubes-made-in-hungary","title":"12AX7 A ( ECC83 ) TUNGSRAM Short Gray Plate Dual Post O Getter Matched Tubes Made in Hungary","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AX7A ( ECC83 ) TUNGSRAM Short Gray Plate Dual Post O Getter Matched Tubes \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMade in Hungary\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLa 12AX7 \u003cmeta charset=\"utf-8\"\u003eTUNGSRAM\u003cstrong\u003e \u003c\/strong\u003eè una valvola molto musicale e ricca di armoniche con un palcoscenico ampio e profondo. L'ariosità è superba, ricca di dettagli e con un ottima separazione degli strumenti.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLoghi usurati come da foto\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eEtichettate da NATIONAL ELECTRONICS\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eL'offerta è per una coppia selezionata \"Matched Pair\".\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test: Va = 250V ; Vg = -2V ; Vf = 6,3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Gm = 1600 ; Ia = 1,2 mA\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValvola 1:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 1: Gm 1800 ; Ia 1,5 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: Gm 1700 ; Ia 1,1 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eValvola 2:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 1: Gm 2100 ; Ia 1,5 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: Gm 1800 ; Ia 1,1 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest Microfonia\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"TUNGSRAM","offers":[{"title":"Default Title","offer_id":46986382311772,"sku":"01582","price":139.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/11_2d0c675c-38f7-4dd1-96b1-ea48fc46415f.jpg?v=1692178975"},{"product_id":"copia-del-12ax7-ecc83-nos-sylvania-halo-getter-tested-tube-made-in-usa-nel-1949","title":"12AX7 ( ECC83 ) NOS SYLVANIA Halo Getter Curve Tracer Tested \u0026 Balanced Tube Made in USA nel 1954","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AX7 ( ECC83 ) NOS SYLVANIA Halo Getter Curve Tracer Tested \u0026amp; Balanced Tube \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA nel 1954\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola con sezioni bilanciate ( vedi curve )\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eLa 12AX7 SYLVANIA a marchio Baldwin si distingue per la sua eccezionale qualità sonora. Caratterizzata da un suono ricco, caldo e dettagliato, questa valvola offre una risposta in frequenza estesa e una dinamica superba. \u003cstrong\u003eGli audiofili apprezzano la sua capacità di riprodurre fedelmente sia i toni più delicati che quelli più potenti\u003c\/strong\u003e, conferendo alla musica una presenza e una profondità straordinarie.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLa \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e12AX7 SYLVANIA a marchio Baldwin\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eè comunemente utilizzata anche nell'ambito degli \u003c\/span\u003e\u003cstrong\u003eamplificatori valvolari per chitarra elettrica\u003c\/strong\u003e\u003cspan\u003e in una vasta gamma di generi musicali, tra cui rock, blues, jazz, country e molti altri. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProdotte da SYLVANIA etichettate Baldwin.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLoghi usurati come da foto\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eL'offerta è per una valvola selezionata\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test: Va = 250V, Vg = -2V, Vf = 6,3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Gm = 1600 ; Ia = 1,2 mA\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 1600 ; Ia = 1,0 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 1600 ; Ia = 1,1 mA\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest Microfonia\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per Cortocircuiti\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":47024075964764,"sku":"01621","price":56.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_c2e6f46e-93a0-4da6-abb1-ebaca596c02c.jpg?v=1693218380"},{"product_id":"6an8-ge-smoked-glass-gray-plates-o-getter-matched-pair-tubes-made-in-usa","title":"6AN8 GE Smoked Glass Gray Plates O Getter Tested Pair Tubes Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e6AN8 GE Smoked Glass Gray Plates O Getter Tested Pair Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProdotte da General Electric in USA.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLoghi usurati come da foto\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValvole testate su AMPLITREX AT-1000 Tube tester:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test Triodo: Va = 150, Vg = -3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Triodo Gm = 4500 ; Ia = 15 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test Pentodo: Va = 200V ; Vg2 = 150 ; Vg = -2,2V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Pentodo Gm = 7800\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRisultato del Test: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValvola 1:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTriodo: Gm 3700 ; Ia 12 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eValvola 2:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTriodo: Gm 4200 ; Ia 12 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eValvola 1\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePentodo: Gm 6000\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eValvola 2:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePentodo: Gm 7500\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest Microfonia\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":47036762947932,"sku":"01645V","price":79.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_e8276502-35d7-46dc-b243-86a3d523775f.jpg?v=1693500911"},{"product_id":"5963-ecc82-12au7-hewlett-packard-by-sylvania-gray-plates-halo-getter-long-plates-matched-pair-made-in-usa","title":"5963 ( ECC82 12AU7 WA ) Hewlett-Packard by SYLVANIA Gray Plates Halo Getter Long Plates Matched Pair Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e5963 ( ECC82 12AU7 WA ) Hewlett-Packard by SYLVANIA Gray Plates Halo Getter Long Plates Matched Pair  \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eReboxed in nostra scatola personalizzata\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eProdotte da SYLVANIA in negli Stati Uniti d'America.\u003c\/span\u003e\u003cbr\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003cbr\u003e\u003cspan\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Gm = 2200 ; Ia = 10,5 mA\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eValvola 1:\u003cbr\u003e\u003cspan\u003eSezione 1: Gm = 2200 ; Ia = 9,5 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2300 ; Ia = 10,0 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 2200 ; Ia = 9,0 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = 9,0 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest Microfonia\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":47038828249436,"sku":"01649V","price":39.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_7f4d42c9-5a08-4b57-8032-e57fc846043d.jpg?v=1767623582"},{"product_id":"6au6-ef94-telefunken-same-numbers-gray-plates-square-getter-matched-tubes-made-in-germany","title":"6AU6 ( EF94 ) Telefunken \u003c\u003e Diamond bottom Same Codes Gray Plates Square Getter Matched Tubes Made in Germany","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong\u003e6AU6 ( EF94 ) Telefunken \u0026lt;\u0026gt; Diamond bottom Same Codes Gray Plates Square Getter Matched Tubes \u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003eMade in Germany \u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eReboxed in box Aftermarket\u003cbr data-mce-fragment=\"1\"\u003eLoghi usurati come da foto\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eTestate su AVO VCM 163 Tube tester:\u003c\/span\u003e\u003cbr\u003e\u003cspan data-mce-fragment=\"1\"\u003eMisure prese dopo un riscaldamento di 4 minuti.\u003cbr data-mce-fragment=\"1\"\u003eVoltage Test: Va = 250V, Vg2 = 150V, Vg1 = -1V\u003cbr data-mce-fragment=\"1\"\u003eMedia 100% Gm = 5200 ; Ia = 10 mA\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong\u003eRISULTATO DEL TEST:  MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eValvola 1: Gm 4650 ; Ia = 8,0 mA\u003cbr data-mce-fragment=\"1\"\u003eValvola 2: Gm 4650 ; Ia = 8,3 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUlteriori test eseguiti:\u003cbr data-mce-fragment=\"1\"\u003eTest Microfonia\u003cbr data-mce-fragment=\"1\"\u003eQualità dell'Emissione\u003cbr data-mce-fragment=\"1\"\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003e\u003cspan data-mce-fragment=\"1\"\u003eTest per GAS\u003c\/span\u003e\u003c\/p\u003e","brand":"TELEFUNKEN","offers":[{"title":"Default Title","offer_id":47045130289500,"sku":"01654R","price":69.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_3966abdb-766d-4c16-b683-1d638fd45459.jpg?v=1693822833"},{"product_id":"6an8a-rca-gray-plates-disc-getter-matched-pair-tubes-made-in-usa","title":"6AN8A RCA NOS NIB Gray Plates Disc Getter Matched Pair Tubes Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e6AN8A RCA Gray Plates Disc Getter Matched Pair Tubes \u003c\/strong\u003e\u003cbr\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e\u003c\/strong\u003e\u003cspan\u003eProdotte da RCA in U.S.A.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLoghi usurati come da foto\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValvole testate su AMPLITREX AT-1000 Tube tester:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test Triodo: Va = 150, Vg = -3V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Triodo Gm = 4500 ; Ia = 15 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test Pentodo: Va = 200V ; Vg2 = 150 ; Vg = -2,2V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Pentodo Gm = 7800\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRisultato del Test: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eTriodo: Gm 4000 ; Ia 12,2 mA\u003cbr\u003eValvola 2:\u003cbr\u003eTriodo: Gm 4300 ; Ia 13,9 mA\u003cbr\u003eValvola 1\u003cbr\u003ePentodo: Gm 6100\u003cbr\u003eValvola 2:\u003cbr\u003ePentodo: Gm 6200\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest Microfonia\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":47285416329564,"sku":"01816Y","price":79.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_38bffd45-857b-44e6-b09e-665e3bdcaada.jpg?v=1699457115"},{"product_id":"12ax7-ecc83-amperex-by-philips-heerlen-short-plates-halo-getter-tested-tube-made-in-holland","title":"12AX7 ( ECC83 ) NOS AMPEREX Bugle Boy Short Plates Halo Getter Tested Tube MADE IN HOLLAND '60s","description":"\u003cp\u003e\u003cstrong\u003e12AX7 ( ECC83 ) NOS AMPEREX \u003cmeta charset=\"utf-8\"\u003eBugle Boy Short Plates Halo Getter Tested Tube \u003c\/strong\u003e\u003cstrong\u003eMADE IN HOLLAND '60s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"715\" data-start=\"265\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eLa 12AX7 \/ ECC83 Amperex Bugle Boy con \u003cstrong data-start=\"239\" data-end=\"255\"\u003eshort plates\u003c\/strong\u003e e \u003cstrong data-start=\"258\" data-end=\"273\"\u003ehalo getter\u003c\/strong\u003e, prodotta a Heerlen (Olanda) negli anni 60, rappresenta una delle versioni più leggendarie e ricercate di questa valvola. Fornita in condizioni \u003cstrong data-start=\"413\" data-end=\"436\"\u003eNOS (New Old Stock)\u003c\/strong\u003e e testata, è famosa per la combinazione unica di precisione tecnica e musicalità raffinata. Il celebre marchio “Bugle Boy” stampato sul vetro è oggi un’icona assoluta nel mondo hi-fi e chitarristico, simbolo di un’epoca d’oro della produzione europea.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"1001\" data-start=\"954\"\u003e\u003cstrong data-end=\"999\" data-start=\"956\"\u003eCaratteristiche timbriche e resa sonora\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"708\" data-end=\"785\"\u003e\n\u003cstrong data-start=\"708\" data-end=\"717\"\u003eBassi\u003c\/strong\u003e: tesi e veloci, con articolazione impeccabile e ottimo controllo.\u003c\/li\u003e\n\u003cli data-start=\"788\" data-end=\"921\"\u003e\n\u003cstrong data-start=\"788\" data-end=\"796\"\u003eMedi\u003c\/strong\u003e: la vera magia Amperex: caldi, luminosi e ariosi, con una naturalezza straordinaria sulle voci e sugli strumenti acustici.\u003c\/li\u003e\n\u003cli data-start=\"924\" data-end=\"1031\"\u003e\n\u003cstrong data-start=\"924\" data-end=\"932\"\u003eAlti\u003c\/strong\u003e: setosi e dettagliati, mai aggressivi, con un’estensione ariosa che dona brillantezza e respiro.\u003c\/li\u003e\n\u003cli data-start=\"1034\" data-end=\"1122\"\u003e\n\u003cstrong data-start=\"1034\" data-end=\"1046\"\u003eDinamica\u003c\/strong\u003e: vivace e pronta, con microdettaglio eccellente e una resa sempre fluida.\u003c\/li\u003e\n\u003cli data-start=\"1125\" data-end=\"1229\"\u003e\n\u003cstrong data-start=\"1125\" data-end=\"1139\"\u003eSoundstage\u003c\/strong\u003e: ampio, tridimensionale e realistico, con separazione impeccabile delle linee musicali.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1843\" data-start=\"1525\"\u003e🎧 \u003cstrong data-end=\"1544\" data-start=\"1528\"\u003eUso in Hi-Fi\u003c\/strong\u003e\u003cbr data-end=\"1547\" data-start=\"1544\"\u003e\u003cmeta charset=\"utf-8\"\u003eConsiderata una delle migliori 12AX7 di sempre, è perfetta come valvola di preamplificazione per amplificatori e pre hi-fi di fascia alta. Dona raffinatezza timbrica, trasparenza e un senso di naturalezza che la rendono insostituibile nei sistemi più esigenti.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"2135\" data-start=\"1845\"\u003e🎸 \u003cstrong data-end=\"1881\" data-start=\"1848\"\u003eUso in amplificatori musicali\u003c\/strong\u003e\u003cbr data-end=\"1884\" data-start=\"1881\"\u003e\u003cmeta charset=\"utf-8\"\u003eNei guitar amp vintage, la Bugle Boy Amperex d\u003cmeta charset=\"utf-8\"\u003eegli anni 60 è leggendaria: armoniche ricche, medi luminosi e un tocco di dolcezza che esalta sia i suoni puliti che quelli leggermente saturi. Un must per chi cerca il “vintage tone” europeo autentico.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-end=\"2263\" data-start=\"2137\"\u003e🎯 \u003cstrong data-end=\"2172\" data-start=\"2140\"\u003eNota per audiofili e tecnici\u003c\/strong\u003e\u003cbr data-end=\"2175\" data-start=\"2172\"\u003e\u003cmeta charset=\"utf-8\"\u003eQuesta versione NOS con \u003cstrong data-start=\"1871\" data-end=\"1901\"\u003eshort plates e halo getter\u003c\/strong\u003e, prodotta nello stabilimento di Heerlen e testata, è oggi estremamente rara. Il logo Bugle Boy originale la rende una valvola da collezione, oltre che un riferimento assoluto per chi desidera la massima qualità sonora.\u003cbr\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvola testata su \u003cstrong\u003eAMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e\u003cspan\u003e Va = 250V ; Vg = -2V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1600 ; Ia = 1,2 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e MOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1500 ; Ia = 1,2 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1400 ; Ia = 1,0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Molto \u003cmeta charset=\"utf-8\"\u003eBassa. Testate e conformi per l'uso in hi-fi e amplificatori per chitarra. Conformi per l'uso in V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBilanciamento:\u003c\/strong\u003e Le sezioni mostrano un leggero scostamento nei valori; ottime per l’uso in hi-fi e in applicazioni musicali (chitarra) ove non siano specificatamente richieste sezioni bilanciate.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e Buone – Scritte parzialmente erose, ma ancora leggibili. Corpo della valvola in buone condizioni. Vedi foto per i dettagli.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e assente – produzione Philips Heerlen per Amperex USA, identificabile per caratteristiche costruttive anni ’60\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"AMPEREX","offers":[{"title":"Default Title","offer_id":47520070304092,"sku":"03140","price":189.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_8eaa71e8-1c74-4656-a74b-e051355b21f1.jpg?v=1758389499"},{"product_id":"12ay7-rca-nos-nib-gray-plates-o-getter-tested-tubes-made-in-usa-3","title":"12AY7 DELCO by RCA NOS NIB Gray Plates O Getter Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AY7 DELCO by RCA NOS NIB Gray Plates O Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003e MADE IN USA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -4V, Vf = 6,3V\u003cbr\u003eMedia 100% Gm = 1700 ; \u003cmeta charset=\"utf-8\"\u003eIa = 3,0 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 1450 ; \u003cmeta charset=\"utf-8\"\u003eIa = 2,3 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 1450 ; \u003cmeta charset=\"utf-8\"\u003eIa = 2,5 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per GAS\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"DELCO","offers":[{"title":"Default Title","offer_id":47578528940380,"sku":"01967","price":89.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_566186ec-5b86-444b-b5f2-b394e71db5b3.jpg?v=1706106140"},{"product_id":"12ax7-toshiba-labeled-baldwin-short-plate-o-matched-tubes-made-in-japan","title":"12AX7 ( ECC83 ) TOSHIBA labeled Baldwin Short Plate Halo Getter Matched Tubes Made in Japan","description":"\u003cp\u003e\u003cstrong\u003e12AX7 (ECC83) TOSHIBA labeled Baldwin Short Plate Halo Getter Matched Tubes Made in Japan\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProdotte in Giappone\u003c\/strong\u003e, queste 12AX7 (ECC83) TOSHIBA, etichettate Baldwin con Short Plate e Halo Getter, sono una coppia matched di valvole NOS ideali per amplificatori a valvole e applicazioni Hi-Fi. Queste valvole offrono un suono bilanciato e dettagliato, perfetto per applicazioni audio di alta fedeltà.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione Sonora:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGamma bassa:\u003c\/strong\u003e Controllata e precisa, con bassi definiti che offrono una base solida e stabile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGamma media:\u003c\/strong\u003e Chiara e naturale, perfetta per esaltare voci e strumenti, mantenendo una trasparenza che arricchisce la resa sonora.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGamma alta:\u003c\/strong\u003e Cristallina e non affaticante, con una brillantezza equilibrata che evidenzia i dettagli senza risultare invadente.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirma sonora complessiva:\u003c\/strong\u003e Queste TOSHIBA 12AX7 offrono una scena sonora ampia e articolata, con una resa bilanciata che valorizza ogni dettaglio.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvole testate su \u003cstrong\u003eAmplitrex AT-1000 Tube tester\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e Va = 250V, Vg = -2V\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMedia 100% Gm = 1600 ; Ia = 1.2 mA\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRisultato del Test: MOLTO FORTE\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSezione 1: Gm = 1400 ; Ia = 1.0 mA\u003c\/li\u003e\n\u003cli\u003eSezione 2: Gm = 1400 ; Ia = 1.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSezione 1: Gm = 1300 ; Ia = 0.9 mA\u003c\/li\u003e\n\u003cli\u003eSezione 2: Gm = 1400 ; Ia = 1.1 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 3:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSezione 1: Gm = 1300 ; Ia = 0.9 mA\u003c\/li\u003e\n\u003cli\u003eSezione 2: Gm = 1500 ; Ia = 1.1 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTest addizionali eseguiti:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTest per Microfonicità\u003c\/li\u003e\n\u003cli\u003eQualità dell'Emissione\u003c\/li\u003e\n\u003cli\u003eTest per Cortocircuiti\u003c\/li\u003e\n\u003cli\u003eTest per GAS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNOS\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di fabbricazione:\u003c\/strong\u003e P28064-09C\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"TOSHIBA","offers":[{"title":"Default Title","offer_id":47599694283100,"sku":"01976","price":97.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_20fd1e57-1db2-4f2b-a0fc-7c659782ec48.jpg?v=1731077126"},{"product_id":"12ax7-ecc83-toshiba-labeled-baldwin-organs-long-plates-o-getter-matched-tubes-made-in-japan","title":"12AX7 ( ECC83 ) TOSHIBA Labeled Baldwin Organs Long Plates O Getter Matched Tubes Made in JAPAN","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AX7 ( ECC83 ) TOSHIBA Labeled Baldwin Organs Long Plates O Getter Matched Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in JAPAN\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eEtichettate per Baldwin Organs\u003cbr\u003eProdotte da TOSHIBA, in GIAPPONE\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eLow Noise \u0026amp; Microphonics\u003cbr\u003eStesso lotto di fabbricazione\u003cbr\u003eLoghi usurati come da foto\u003cbr\u003e\u2028\u003cbr\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V, Vf = 6,3V\u003cbr\u003eMedia 100% Gm = 1600 ; Ia = 1,2 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003cbr\u003e\u2028\u003cbr\u003eValvola 1:\u003cbr\u003eSezione 1: Gm 1450 ; Ia = 1,1 mA\u003cbr\u003eSezione 2: Gm 1400 ; Ia = 1,1 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm 1350 ; Ia = 0,9 mA\u003cbr\u003eSezione 2: Gm 1400 ; Ia = 1,0 mA\u003cbr\u003e\u2028\u003cbr\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"TOSHIBA","offers":[{"title":"Default Title","offer_id":47641554288988,"sku":"01996Y","price":89.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_4a1f21f7-cad5-448c-9288-9e2b089e4861.jpg?v=1707485275"},{"product_id":"12au7-a-ecc82-rca-long-gray-plates-halo-getter-tested-tubes-made-in-usa","title":"12AU7 A ( ECC82 ) RCA NOS NIB Long Gray Plates Halo Getter Tested Tubes Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12AU7 A ( ECC82 ) RCA Long Gray Plates Halo Getter Tested Tubes \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQueste valvole sono rinomate per il loro timbro ricco e caldo, con una resa sonora morbida e armoniosa. Offrono una straordinaria trasparenza nelle medie frequenze, unita a bassi profondi e controllati. Il dettaglio nelle alte frequenze è preciso, senza risultare mai affaticante, rendendole perfette per ascolti prolungati.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003cstrong\u003eIL PREZZO SI RIFERISCE AD UNA VALVOLA SELEZIONATA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cbr\u003eMEDIA 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 2200 ; Ia = 10,6 mA\u003cbr\u003eSezione 2: Gm = 2100 ; Ia = 10,0 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 2300 ; Ia = 12,0 mA\u003cbr\u003eSezione 2: Gm = 2300 ; Ia = 12,0 mA\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eValvola 3:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 1: Gm = 2200 ; Ia = 10,5 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: Gm = 2300 ; Ia = 11,2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eValvola 4:\u003cbr\u003eSezione 1: Gm = 2000 ; Ia = 9,0 mA\u003cbr\u003eSezione 2: Gm = 2000 ; Ia = 9,0 mA\u003cbr\u003eValvola 5:\u003cbr\u003eSezione 1: Gm = 2100 ; Ia = 12,5 mA\u003cbr\u003eSezione 2: Gm = 2200 ; Ia = 10,5 mA\u003c\/span\u003e \u003cbr\u003e\u003cbr\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":47665995120988,"sku":"02010Y","price":34.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_bb66eab1-4fc1-4d8a-858f-8fe89329255d.jpg?v=1707929965"},{"product_id":"12au7-a-ecc82-ge-nos-nib-gray-plates-halo-getter-matched-quad-tubes-made-in-usa","title":"12AU7 A ( ECC82 ) GE NOS NIB Gray Plates Halo Getter Matched Quad Tubes Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12AU7 A ( ECC82 ) GE NOS NIB Gray Plates Halo Getter Matched Quad Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn Original Box\u003cbr\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cbr\u003eMEDIA 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 2000 ; Ia = 8,6 mA\u003cbr\u003eSezione 2: Gm = 2000 ; Ia = 8,6 mA\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eValvola 2:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 1: Gm = 1950 ; Ia = 8,6 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: Gm = 1950 ; Ia = 8,6 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eValvola 3:\u003cbr\u003eSezione 1: Gm = 2000 ; Ia = 8,6 mA\u003cbr\u003eSezione 2: Gm = 2000 ; Ia = 8,4 mA\u003cbr\u003eValvola 4:\u003cbr\u003eSezione 1: Gm = 2000 ; Ia = 8,4 mA\u003cbr\u003eSezione 2: Gm = 2000 ; Ia = 8,4 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":47731738181980,"sku":"02045X","price":109.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_36425cb1-87d3-4f2a-a7d5-b72b08a738bf.jpg?v=1709307293"},{"product_id":"12au7-a-ecc82-ge-nos-nib-gray-plates-halo-getter-tested-tube-made-in-usa","title":"12AU7 A ( ECC82 ) GE NOS NIB Gray Plates Halo Getter Tested Tube Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12AU7 A ( ECC82 ) GE NOS NIB Gray Plates Halo Getter Tested Tube \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn Original Box\u003cbr\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cbr\u003eMEDIA 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSezione 1: Gm = 2000 ; Ia = 9,0 mA\u003cbr\u003eSezione 2: Gm = 2000 ; Ia = 9,2 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":47731993149788,"sku":"02047X","price":26.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_a90a7775-ebf6-4408-99f5-0a39ed111645.jpg?v=1709311536"},{"product_id":"jan-12av7-nos-nib-sylvania-black-plates-halo-getter-tested-tube-made-in-usa","title":"JAN 12AV7 NOS NIB SYLVANIA Black Plates Halo Getter Tested Tube Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eJAN 12AV7 NOS NIB SYLVANIA Black Plates Halo Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003e Made in USA\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eProdotte da SYLVANIA - USA.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003eVoltage Test: Va = 150V, Vg = -1V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eMedia 100% Gm = 8,5 ; Ia = 18 mA\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST:  MOLTO FORTE\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 9,7 ; Ia = 22 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 9,1 ; Ia = 19,6 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUlteriori test eseguiti:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest Microfonia\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eQualità dell'Emissione\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":47734145253724,"sku":"02049","price":16.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_82356e69-e446-487e-b6af-8d504044eabe.jpg?v=1709389346"},{"product_id":"6350-ge-nos-nib-black-plates-oval-plates-o-getter-matched-pair-tubes-made-in-usa","title":"6350 GE NOS NIB Black Plates Oval Plates O Getter Matched Pair Tubes MADE in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e6350 GE NOS NIB Black Plates Oval Plates O Getter Matched Pair Tubes \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE in USA\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eValvole Rare\u003cbr\u003eStesso codice di fabbricazione: KI\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 150V, Vg = -5V\u003cbr\u003eMEDIA 100% Gm = 4,6 ; Ia = 11,0 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 4,5 ; Ia = 10,0 mA\u003cbr\u003eSezione 2: Gm = 4,9 ; Ia = 11,2 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 4,6 ; Ia = 10,4 mA\u003cbr\u003eSezione 2: Gm = 4,9 ; Ia = 11,4 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest per Basso rumore \u0026amp; Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":47970064400732,"sku":"02131","price":94.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_69b2706a-811f-4488-8429-ff6d49f2df1a.jpg?v=1712847365"},{"product_id":"12au7-ecc82-nos-sylvania-for-baldwin-organ-long-gray-plates-halo-getter-tested-tube-made-in-usa-50s","title":"12AU7 ( ECC82 ) NOS SYLVANIA for Baldwin Organ Long Gray Plates Halo Getter Tested Tube Made in USA '50s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AU7 ( ECC82 ) NOS SYLVANIA for Baldwin Organ Long Gray Plates Halo Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMade in USA '50s \u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eFabbricazione Speciale Sylvania per \u003cmeta charset=\"utf-8\"\u003eBaldwin Organ Company\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eIl suono può essere descritto come ricco, dettagliato e con una buona risposta musicale.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan\u003eMedia 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2250 ; Ia = 9,5 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2350 ; Ia = 10,9 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltri Test effettuati:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":48684347687260,"sku":"02179","price":19.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_0e356ec9-bc65-48c8-9146-97ebf9003a08.jpg?v=1715590416"},{"product_id":"7247-mullard-blackburn-ribbed-plates-halo-getter-amplitrex-matched-tubes-made-in-great-britain-copia","title":"7247 ( 12DW7 ) MULLARD Blackburn O Getter Matched Tubes Made in GT. BRITAIN","description":"\u003cp\u003e\u003cstrong\u003e7247 ( 12DW7 ) MULLARD Blackburn O Getter Matched Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN GT. BRITAIN\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da MULLARD UK nello stabilimento di Blackburn per HAMMOND USA.\u003cbr\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStesso codice di fabbricazione: 6B2 B6J2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eL'offerta è per una \"Matched Pair\u003cbr\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test:\u003cbr\u003eVa = 250V, Vg = -8,5V\u003cbr\u003eVa = 250V, Vg = -2V\u003cbr\u003eMedia 100% Gm = 2,2 ; Ia = 10,5 mA\u003cbr\u003eMedia 100% Gm = 1,6 ; Ia = 1,2 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 1,9 ; Ia = 10,9 mA\u003cbr\u003eSezione 2: Gm = 1,5 ; Ia = 1,0 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 1,9 ; Ia = 9,6 mA\u003cbr\u003eSezione 2: Gm = 1,4 ; Ia = 0,9 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e","brand":"MULLARD","offers":[{"title":"Default Title","offer_id":48686230733148,"sku":"02182","price":79.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_adda7e14-9eae-43ce-a63d-2bfb0e2371ce.jpg?v=1715615827"},{"product_id":"7247-12dw7-mullard-blackburn-o-getter-matched-tubes-made-in-gt-britain-1","title":"7247 ( 12DW7 ) MULLARD Blackburn O Getter Matched Tubes Made in GT. BRITAIN","description":"\u003cp\u003e\u003cstrong\u003e7247 ( 12DW7 ) MULLARD Blackburn O Getter Matched Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN GT. BRITAIN\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da MULLARD UK nello stabilimento di Blackburn per HAMMOND USA.\u003cbr\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003eL'offerta è per una \"Matched Pair\u003cbr\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test:\u003cbr\u003eVa = 250V, Vg = -8,5V\u003cbr\u003eVa = 250V, Vg = -2V\u003cbr\u003eMedia 100% Gm = 2,2 ; Ia = 10,5 mA\u003cbr\u003eMedia 100% Gm = 1,6 ; Ia = 1,2 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 2,0 ; Ia = 9,6 mA\u003cbr\u003eSezione 2: Gm = 1,9 ; Ia = 1,2 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 2,1 ; Ia = 10,6 mA\u003cbr\u003eSezione 2: Gm = 1,7 ; Ia = 1,0 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"MULLARD","offers":[{"title":"Default Title","offer_id":48689932173660,"sku":"02186X","price":79.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_48fa86e4-8e47-4f35-b305-f7ccf93b0f46.jpg?v=1715681192"},{"product_id":"12ax7-ecc83-nos-sylvania-gray-plates-halo-getter-labeled-baldwin-tested-balanced-tube-made-in-usa","title":"12AX7 ( ECC83 ) NOS SYLVANIA\/Baldwin Gray Plates Halo Getter Red Tip Tested Balanced Tube Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12AX7 ( ECC83 ) NOS SYLVANIA Gray Plates Halo Getter labeled Baldwin Red Tip Tested Balanced Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA '50s\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eLa 12AX7 SYLVANIA a marchio Baldwin si distingue per la sua eccezionale qualità sonora. Caratterizzata da un suono ricco, caldo e dettagliato, questa valvola offre una risposta in frequenza estesa e una dinamica superba. \u003cstrong\u003eGli audiofili apprezzano la sua capacità di riprodurre fedelmente sia i toni più delicati che quelli più potenti\u003c\/strong\u003e, conferendo alla musica una presenza e una profondità straordinarie.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eLa \u003c\/span\u003e\u003cspan\u003e12AX7 SYLVANIA a marchio Baldwin\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eè comunemente utilizzata anche nell'ambito degli \u003c\/span\u003e\u003cstrong\u003eamplificatori valvolari per chitarra elettrica\u003c\/strong\u003e\u003cspan\u003e in una vasta gamma di generi musicali, tra cui rock, blues, jazz, country e molti altri. \u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da SYLVANIA etichettate Baldwin.\u003cbr\u003e\u003cbr\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V, Vf = 6,3V\u003cbr\u003eMedia 100% Gm = 1600 ; Ia = 1,2 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 1600 ; Ia = 1,0 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e1600 ; Ia = 1,0 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":49279174443356,"sku":"02395","price":46.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_7c638189-8efb-4c4f-a7f6-a07a361a7b8a.jpg?v=1724913661"},{"product_id":"12au7a-ecc82-nos-sylvania-for-baldwin-long-gray-plates-o-getter-matched-tubes-made-in-usa-50s-copy-copy","title":"12AU7A ( ECC82 ) NOS SYLVANIA for Baldwin Long Gray Plates O Getter Matched Tubes Made in USA '50s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cstrong\u003e12AU7A ( ECC82 ) NOS SYLVANIA for Baldwin Long Gray Plates O Getter Matched Tubes \u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMade in USA '50s\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLa 12AU7A SYLVANIA etichettata Baldwin è stata prodotta negli anni 50 e venne selezionata specificamente per l'uso su apparecchiature prodotte da Baldwin. Questo comporta una maggiore attenzione alla qualità del suono e un'attenzione particolare alla linearità e all'affidabilità della valvola. Il suono potrebbe essere descritto come ricco, caldo e dettagliato, con una buona risposta musicale.  E' caratterizzato da una risposta dei bassi ben controllata, medi ricchi di dettagli e alti nitidi. Le armoniche sono piacevoli e il suono può avere una piacevole morbidezza o rotondità.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eLow Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eStesso Codice di fabbricazione: ANJ 312 052\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eLoghi usurati come da foto.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003cbr\u003e\u003c\/strong\u003eMedia 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cstrong\u003e\u003cbr\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eValvola 1:\u003cbr\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = 9,2 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = \u003cmeta charset=\"utf-8\"\u003e9,4 mA\u003cbr\u003eValvola 2:\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2150 ; Ia = 9,0 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = 9,2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eValvola 3:\u003cbr\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2150 ; Ia = 8,8 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2150 ; Ia = 9,2 mA\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eValvola 4:\u003cbr\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2200 ; Ia = 9,2 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = \u003cmeta charset=\"utf-8\"\u003e2200 ; Ia = 9,4 mA\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAltri Test effettuati:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eTest per GAS\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":49393743397212,"sku":"02425M","price":79.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_72bae0b2-3d33-4b1b-ac2c-0be5bd822497.jpg?v=1726764267"},{"product_id":"ecc88-6dj8-nos-ge-halo-getter-tested-pair-tubes-made-in-holland-50s-copy","title":"ECC88 ( 6DJ8 ) GE NOS NIB Halo Getter Matched Pair Tubes Made in USA '62","description":"\u003cp\u003e\u003cstrong\u003eECC88 ( 6DJ8 ) GE NOS NIB Halo Getter Matched Pair Tubes Made in USA '62\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"117\" data-end=\"474\" class=\"\"\u003eLa coppia di \u003cstrong\u003eECC88 prodotte da General Electric nel 1962\u003c\/strong\u003e, con getter ad anello (Halo Getter), rappresenta una delle interpretazioni americane più equilibrate e versatili di questa celebre doppio triodo. \u003cstrong\u003eIl sound è neutro, controllato e piacevolmente musicale\u003c\/strong\u003e, con una resa sonora che privilegia la \u003cstrong\u003etrasparenza e il dettaglio\u003c\/strong\u003e senza mai risultare affaticante.\u003c\/p\u003e\n\u003cp data-start=\"476\" data-end=\"868\" class=\"\"\u003eI \u003cstrong\u003ebassi\u003c\/strong\u003e sono ben \u003cstrong\u003eestesi e compatti\u003c\/strong\u003e, mai invadenti ma presenti con autorevolezza, capaci di restituire solidità senza compromettere la velocità. La \u003cstrong\u003egamma media è fluida\u003c\/strong\u003e e bilanciata, con un \u003cstrong\u003etimbro naturale \u003c\/strong\u003eche rende le voci e gli strumenti solisti credibili e ben definiti. Gli \u003cstrong\u003ealti\u003c\/strong\u003e risultano \u003cstrong\u003eariosi e delicati\u003c\/strong\u003e, mai pungenti, e contribuiscono a creare una scena sonora ampia e ben focalizzata.\u003c\/p\u003e\n\u003cp data-start=\"870\" data-end=\"1145\" class=\"\"\u003eNel complesso, queste ECC88 GE restituiscono una timbrica lineare e dinamica, \u003cstrong\u003eadatta\u003c\/strong\u003e \u003cstrong\u003esia per applicazioni audio critiche che per contesti musicali più rilassati\u003c\/strong\u003e. Sono una scelta eccellente per chi cerca una valvola precisa ma non sterile, con un tocco di musicalità e calore.\u003c\/p\u003e\n\u003cp data-start=\"32\" data-end=\"70\" class=\"\"\u003e🎧 \u003cstrong data-start=\"35\" data-end=\"70\"\u003eUso in Amplificatori per Cuffie\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"72\" data-end=\"439\" class=\"\"\u003eLe ECC88 GE del 1962 si comportano in modo eccellente negli amplificatori per cuffie, grazie al loro basso rumore di fondo, alla risposta dinamica fluida e alla timbrica neutra ma musicale. Sono particolarmente apprezzate da chi ascolta generi acustici, classica, jazz o registrazioni ad alta risoluzione, dove la precisione e la naturalezza timbrica sono essenziali.\u003c\/p\u003e\n\u003cp data-start=\"441\" data-end=\"769\" class=\"\"\u003eLa gamma bassa è compatta e ben controllata, ideale per mantenere il dettaglio anche con cuffie ad alta sensibilità. La scena sonora è ben distribuita e coerente, con un imaging preciso e un buon senso di profondità. Il suono resta sempre chiaro e definito, senza mai diventare affaticante anche dopo lunghe sessioni di ascolto.\u003c\/p\u003e\n\u003cp data-start=\"771\" data-end=\"808\" class=\"\"\u003eSono particolarmente consigliate per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"928\" data-end=\"986\"\u003eAmplificatori valvolari OTL o ibridi di fascia alta\u003c\/li\u003e\n\u003cli data-start=\"928\" data-end=\"986\"\u003ePre-phono o DAC con stadio valvolare basato su ECC88 \/ 6DJ8\u003c\/li\u003e\n\u003cli data-start=\"928\" data-end=\"986\"\u003eSistemi per ascolto critico da studio o audiofili esigenti\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvola testata su \u003cstrong\u003eAMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e\u003cspan\u003e Va = 90V ; Vg = -1,2V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 12,5 ; Ia = 15,0 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e MOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e Gm = 14,6 ; Ia = 19,9 mA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e Gm = 15,5 ; Ia = 18,6 mA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 1:\u003c\/strong\u003e\u003cspan\u003e Gm = 13,6 ; Ia = 14,2 mA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2:\u003c\/strong\u003e\u003cspan\u003e Gm = 14,2 ; Ia = 15,2 mA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eBassa. Testate e conformi per l'uso in hi-fi e amplificatori per cuffie.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eCortocircuiti e GAS:\u003c\/strong\u003e Assenti.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni: \u003c\/strong\u003eNOS - NIB - New Old Stock, New In Box - Testata e funzionante - Fornite in scatola Originale.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunzionalità: \u003c\/strong\u003ePerfettamente operativa.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni estetiche:\u003c\/strong\u003e Eccellenti – Scritte perfettamente conservate, minimi segni del tempo. Vedi foto per i dettagli.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCodice di Fabbricazione: \u003c\/strong\u003e62-34 - Fabbricate da General Electric U.S.A. - la 34ma settimana del 1962\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":49400297128284,"sku":"02429M","price":59.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_42a970e6-d50c-4f2e-b4fa-459ea76a1b11.jpg?v=1726850752"},{"product_id":"12ay7-rca-nos-nib-gray-plates-o-getter-tested-tube-made-in-usa-copy","title":"12AY7 RCA NOS NIB Gray Plates Square Getter Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AY7 RCA NOS NIB Gray Plates Square Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -4V, Vf = 6,3V\u003cbr\u003eMedia 100% Gm = 1700 ; Ia = 3,0 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSezione 1: Gm = 1600 ; Ia = 2,7 mA\u003cbr\u003eSezione 2: Gm = 1500 ; Ia = 2,5 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":49419442848092,"sku":"02434M","price":94.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_6584b8c2-fecc-4b6a-9a87-c18e86e3b8b3.jpg?v=1727186673"},{"product_id":"12at7-ecc81-ge-nos-nib-wing-gray-plates-o-getter-tested-tube-made-in-usa","title":"ECC81 ( 12AT7 ) GE NOS NIB Gray Plates Halo Getter Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eECC81 ( 12AT7 ) GE NOS NIB Gray Plates Halo Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da General Electric negli Stati Uniti d'America\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQueste valvole offrono un suono caratterizzato da una notevole chiarezza e dettaglio, con una gamma media ben bilanciata e un'estensione delle alte frequenze ariosa e brillante. Questa versione con placche grigie, presenta un tono leggermente caldo, senza perdere in definizione, risultando perfetta per chi cerca un equilibrio tra precisione e musicalità. Ideali per applicazioni audio Hi-Fi e strumenti musicali, garantiscono una riproduzione sonora ricca e articolata.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestata su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V\u003cbr\u003eMedia 100% Gm = 5,5 ; Ia = 10 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSezione 1: Gm = 6,9 ; Ia = 8,8 mA\u003cbr\u003eSezione 2: Gm = 5,5 ; Ia = 9,8  mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":49424330719580,"sku":"02439","price":29.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_1640de2f-b0a1-4477-b207-16c311eab6d4.jpg?v=1727257957"},{"product_id":"6eu7-sylvania-nos-nib-long-gray-plates-halo-getter-tested-pair-tubes-made-in-usa","title":"6EU7 NOS NIB SYLVANIA Matched Pair – Long Gray Plates Halo Getter USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e6EU7 SYLVANIA NOS NIB Long Gray Plates Halo Getter Matched Pair Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da SYLVANIA negli Stati Uniti d'America\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eQuesta valvole 6EU7 SYLVANIA sono rinomate per offrire un suono particolarmente equilibrato e musicale. Grazie alla particolare conformazione delle placche, queste valvole si distinguono per un timbro caldo e dettagliato, con una riproduzione delle medie frequenze precisa e naturale. Gli alti risultano morbidi e mai stridenti, mentre le basse frequenze sono ben controllate e rotonde, rendendole ideali per amplificatori hi-fi e applicazioni audio di alta fedeltà.\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvola testata su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V\u003cbr\u003eMedia 100% Gm = 1,6 ; Ia = 1,2 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 1,7 ; Ia = 1,1 mA\u003cbr\u003eSezione 2: Gm = 1,6 ; Ia = 1,0 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 1,7 ; Ia = 1,2 mA\u003cbr\u003eSezione 2: Gm = 1,4 ; Ia = 0,9 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":49436556788060,"sku":"02449M","price":109.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_4e5b0d37-e600-4ade-b47c-d4c1ff805f01.jpg?v=1727425102"},{"product_id":"12at7-ecc81-zenith-nos-nib-gray-plates-square-getter-tested-tube-made-in-usa","title":"12AT7 ECC81 NOS NIB ZENITH Tested Tube – Wing Gray Plates USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AT7 ( ECC81 ) ZENITH NOS NIB Wing Gray Plates Square Getter Tested Tube \u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProdotte da SYLVANIA per ZENITH negli Stati Uniti d'America\u003c\/p\u003e\n\u003cp\u003eLe valvole \u003cstrong\u003e12AT7 (ECC81) ZENITH NOS NIB Wing Gray Plates Square Getter\u003c\/strong\u003e, prodotte da \u003cstrong\u003eSylvania\u003c\/strong\u003e e etichettate per \u003cstrong\u003eZENITH\u003c\/strong\u003e, offrono un suono di notevole qualità, caratterizzato da una notevole definizione e trasparenza. Grazie alla configurazione dei \u003cstrong\u003eGray Plates\u003c\/strong\u003e a forma di ala e allo \u003cstrong\u003eSquare Getter\u003c\/strong\u003e, queste valvole tendono a fornire un suono aperto e brillante, con un'ottima separazione dei dettagli sonori. Nel registro delle alte frequenze, si può notare una particolare chiarezza e precisione, rendendole ideali per chi cerca un suono arioso e privo di asprezze. I medi risultano ben bilanciati, con una resa naturale delle voci e degli strumenti, mentre le basse frequenze sono presenti ma non invadenti, garantendo un controllo ottimale del suono senza sacrificare la profondità.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestata su AMPLITREX AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V\u003cbr\u003eMedia 100% Gm = 5,5 ; Ia = 10 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSezione 1: Gm = 6,2 ; Ia = 10,6 mA\u003cbr\u003eSezione 2: Gm = 6,3 ; Ia = 10,8 mA\u003c\/p\u003e\n\u003cp\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"ZENITH","offers":[{"title":"Default Title","offer_id":49438424891740,"sku":"02450M","price":29.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_3585b8ee-2c99-475f-9b90-3f76020e3b07.jpg?v=1727445022"},{"product_id":"12au7-ecc82-nos-philco-long-gray-plates-halo-getter-tested-tube-made-in-usa","title":"12AU7 ECC82 NOS NIB PHILCO Tested Tube – Long Gray Plates Halo Getter Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AU7 ( ECC82 ) NOS NIB PHILCO Long Gray Plates Halo Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eIn Scatola Originale (Nota: un flip di chiusura della scatolina è mancante )\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eLe valvole 12AU7 (ECC82) NOS PHILCO Long Gray Plates con Halo Getter, prodotte negli Stati Uniti, offrono una firma sonora calda e ricca di dettagli. Grazie alle piastre lunghe e grigie, queste valvole tendono a fornire una risposta armonica bilanciata con un timbro particolarmente musicale. Il suono è caratterizzato da una buona presenza nei medi, rendendo il segnale pieno e piacevole, ideale per chi cerca un’esperienza d’ascolto coinvolgente ma mai affaticante. Gli alti sono morbidi e delicati, senza risultare taglienti, mentre le basse frequenze risultano ben controllate e presenti, ma non invadenti. Queste valvole sono perfette per chi apprezza una resa naturale, con un tocco di calore e morbidezza tipico delle valvole NOS di alta qualità.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003cbr\u003e\u003c\/strong\u003eMedia 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cstrong\u003e\u003cbr\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSezione 1: \u003cmeta charset=\"utf-8\"\u003eGm = 2200 ; Ia = 10,4 mA\u003cbr\u003eSezione 2: \u003cmeta charset=\"utf-8\"\u003eGm = 2100 ; Ia = 9,2 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAltri Test effettuati:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"PHILCO","offers":[{"title":"Default Title","offer_id":49438736056668,"sku":"02451M","price":26.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_2355fab0-78ce-443d-8b47-a90d6dd9dc19.jpg?v=1727447323"},{"product_id":"12au7-a-ecc82-rca-nos-long-gray-plates-halo-getter-matched-tubes-made-in-usa-3","title":"12AU7A ECC82 NOS RCA Tested Tube – Long Gray Plates Halo Getter Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12AU7A ( ECC82 ) RCA NOS Long Gray Plates Halo Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQueste valvole sono rinomate per il loro timbro ricco e caldo, con una resa sonora morbida e armoniosa. Offrono una straordinaria trasparenza nelle medie frequenze, unita a bassi profondi e controllati. Il dettaglio nelle alte frequenze è preciso, senza risultare mai affaticante, rendendole perfette per ascolti prolungati.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cbr\u003eMEDIA 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSezione 1: Gm = 2000 ; Ia = 8,3 mA\u003cbr\u003eSezione 2: Gm = 1900 ; Ia = 8,3 mA\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003cbr\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":49467678490972,"sku":"02459U","price":22.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_0dd9616b-64f0-4e9d-be9e-725b10ec373e.jpg?v=1727861286"},{"product_id":"12au7-a-ecc82-rca-nos-long-gray-plates-halo-getter-matched-tubes-made-in-usa-4","title":"12AU7A ECC82 NOS RCA Matched Pair Tubes – Long Gray Plates Halo Getter USA","description":"\u003cp\u003e\u003cstrong\u003e12AU7A ( ECC82 ) RCA NOS Long Gray Plates Halo Getter Matched Tubes\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQueste valvole sono rinomate per il loro timbro ricco e caldo, con una resa sonora morbida e armoniosa. Offrono una straordinaria trasparenza nelle medie frequenze, unita a bassi profondi e controllati. Il dettaglio nelle alte frequenze è preciso, senza risultare mai affaticante, rendendole perfette per ascolti prolungati.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLoghi usurati come da foto\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su Amplitrex AT-1000 Tube tester:\u003c\/strong\u003e\u003cbr\u003eVoltage Test: Va = 250V, Vg = -8,5V\u003cbr\u003eMEDIA 100% Gm = 2200 ; Ia = 10,5 mA\u003cbr\u003e\u003cstrong\u003eRISULTATO DEL TEST: MOLTO FORTE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eValvola 1:\u003cbr\u003eSezione 1: Gm = 2150 ; Ia = 9,8 mA\u003cbr\u003eSezione 2: Gm = 2250 ; Ia = 12,8 mA\u003cbr\u003eValvola 2:\u003cbr\u003eSezione 1: Gm = 2050 ; Ia = 9,4 mA\u003cbr\u003eSezione 2: Gm = 2250 ; Ia = 12,6 mA\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003eUlteriori test eseguiti:\u003cbr\u003eTest Microfonia\u003cbr\u003eQualità dell'Emissione\u003cbr\u003eTest per Cortocircuiti\u003cbr\u003eTest per GAS\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eScopra perché le nostre valvole sono diverse →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":49469141746012,"sku":"02460U","price":44.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_82a8474f-ef52-42fa-b067-601cdebd1537.jpg?v=1727877296"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/collections\/preamp-tubes-662632.jpg?v=1657112580","url":"https:\/\/vacuumtubestreasures.com\/it-hr\/collections\/preamp-tubes.oembed?page=14","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}