{"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":2500.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/8_dab47132-4583-48a6-a7ec-dc77ffb35acc.jpg?v=1769450112","url":"https:\/\/vacuumtubestreasures.com\/it-al\/products\/12au7-ecc82-sylvania-gray-plates-square-getter-matched-tubes-made-in-usa-47","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}