{"product_id":"5v3-5au4-dumont-nos-nib-black-plates-double-halo-getter-amplitrex-tested-tube-rectifier-made-in-usa","title":"5V3 ( 5AU4 ) DUMONT NOS NIB Black Plates Double Halo Getter - Amplitrex Tested - Tube Rectifier Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e5V3 ( 5AU4 ) DUMONT NOS NIB Black Plates Double Halo Getter Tested Tube Rectifier Made in USA\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"169\" data-end=\"642\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eLa \u003cstrong data-start=\"214\" data-end=\"235\"\u003eDumont 5V3 (5AU4)\u003c\/strong\u003e è una rettificatrice a doppia semionda prodotta negli Stati Uniti negli anni ’40–’50.\u003cbr data-start=\"321\" data-end=\"324\"\u003eQuesto esemplare, pur marchiato \u003cstrong data-start=\"356\" data-end=\"366\"\u003eDumont\u003c\/strong\u003e, proviene dagli stabilimenti \u003cstrong data-start=\"396\" data-end=\"408\"\u003eSylvania\u003c\/strong\u003e, uno dei più prestigiosi costruttori americani dell’epoca.\u003cbr data-start=\"467\" data-end=\"470\"\u003eSi presenta in condizioni \u003cstrong data-start=\"496\" data-end=\"536\"\u003eNOS NIB (New Old Stock – New in Box)\u003c\/strong\u003e con \u003cstrong data-start=\"541\" data-end=\"557\"\u003eplacche nere\u003c\/strong\u003e e il raro sistema di \u003cstrong data-start=\"579\" data-end=\"601\"\u003edouble halo getter\u003c\/strong\u003e, una configurazione che unisce robustezza e lunga durata operativa.\u003cbr data-start=\"669\" data-end=\"672\"\u003eLa valvola è stata accuratamente \u003cstrong data-start=\"705\" data-end=\"738\"\u003etestata con Amplitrex AT-1000\u003c\/strong\u003e, risultando forte e perfettamente efficiente.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"956\" data-end=\"1010\"\u003eCaratteristiche timbriche e comportamento sonoro\u003c\/h3\u003e\n\u003cp data-start=\"850\" data-end=\"976\"\u003e\u003cstrong data-start=\"850\" data-end=\"860\"\u003eBassi:\u003c\/strong\u003e profondi, compatti e ben controllati, senza rigonfiamenti indesiderati. Offrono stabilità all’intera gamma audio.\u003c\/p\u003e\n\u003cp data-start=\"979\" data-end=\"1069\"\u003e\u003cstrong data-start=\"979\" data-end=\"988\"\u003eMedi:\u003c\/strong\u003e trasparenti e naturali, con ottima resa timbrica di voci e strumenti acustici.\u003c\/p\u003e\n\u003cp data-start=\"1072\" data-end=\"1203\"\u003e\u003cstrong data-start=\"1072\" data-end=\"1081\"\u003eAlti:\u003c\/strong\u003e estesi e fluidi, brillanti ma privi di asprezze, con un decadimento naturale che dona aria e respiro alla scena sonora.\u003c\/p\u003e\n\u003cp data-start=\"1206\" data-end=\"1315\"\u003e\u003cstrong data-start=\"1206\" data-end=\"1219\"\u003eDinamica:\u003c\/strong\u003e pronta e coerente, capace di sostenere con sicurezza sia micro-dettagli che picchi complessi.\u003c\/p\u003e\n\u003cp data-start=\"1318\" data-end=\"1444\"\u003e\u003cstrong data-start=\"1318\" data-end=\"1333\"\u003eSoundstage:\u003c\/strong\u003e scena stabile e tridimensionale, con buona separazione degli strumenti e un “nero di fondo” ben percepibile.\u003c\/p\u003e\n\u003ch3 data-start=\"1971\" data-end=\"2004\"\u003e🎧 Uso in amplificatori Hi-Fi\u003c\/h3\u003e\n\u003cp data-start=\"2006\" data-end=\"2283\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003ePerfetta come rettificatrice in amplificatori stereo e preamplificatori hi-fi di fascia alta.\u003cbr data-start=\"1579\" data-end=\"1582\"\u003eLa stabilità dell’alimentazione si traduce in maggiore dettaglio, trasparenza e coerenza musicale.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"2290\" data-end=\"2340\"\u003e🎸 Uso in amplificatori per strumenti musicali\u003c\/h3\u003e\n\u003cp data-start=\"2342\" data-end=\"2639\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eOttima anche in amplificatori per strumenti musicali e organi vintage, dove assicura una corrente affidabile e silenziosa, con un suono robusto e dinamico.\u003cbr\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"2646\" data-end=\"2681\"\u003e🎯 Nota per audiofili e tecnici\u003c\/h3\u003e\n\u003cp data-start=\"2683\" data-end=\"3065\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003eLa \u003cstrong data-start=\"1930\" data-end=\"1987\"\u003eDumont 5V3 (5AU4) Black Plates con double halo getter\u003c\/strong\u003e, di produzione \u003cstrong data-start=\"2003\" data-end=\"2015\"\u003eSylvania\u003c\/strong\u003e, rappresenta una delle versioni più raffinate della serie.\u003cbr data-start=\"2074\" data-end=\"2077\"\u003eIl connubio tra robustezza elettrica e resa sonora musicale la rende una scelta ideale sia per \u003cstrong data-start=\"2172\" data-end=\"2206\"\u003erestauri di apparecchi vintage\u003c\/strong\u003e che per \u003cstrong data-start=\"2215\" data-end=\"2249\"\u003eimpianti hi-fi di alto livello\u003c\/strong\u003e.\u003cbr data-start=\"2250\" data-end=\"2253\"\u003eL’esemplare offerto è \u003cstrong data-start=\"2275\" data-end=\"2305\"\u003eNOS NIB e Amplitrex Tested\u003c\/strong\u003e, a garanzia di prestazioni affidabili e lunga durata.\u003cbr\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvole testate su\u003cstrong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cstrong data-start=\"2042\" data-end=\"2072\"\u003eAmplitrex AT-1000\u003c\/strong\u003e \u003c\/span\u003e\u003c\/strong\u003eTube tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1691\" data-end=\"1728\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003e\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e Va = 278V, Vf = 5V\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1731\" data-end=\"1786\"\u003eCaduta diretta: \u003cstrong data-start=\"1747\" data-end=\"1784\"\u003e19–20 V peak (\u003cmeta charset=\"utf-8\"\u003esezioni bilanciate)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1789\" data-end=\"1834\"\u003eTenuta inversa: \u003cstrong data-start=\"1805\" data-end=\"1832\"\u003e397–396 V peak (ottima)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1837\" data-end=\"1894\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eRisultato del Test: \u003c\/strong\u003eMOLTO FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eCorrente di placca:\u003c\/span\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValvola :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eSezione 1:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eIa = 120 mA    \u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eSezione 2:\u003c\/strong\u003e \u003c\/span\u003e\u003cspan\u003eIa = 120 mA\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eCorrente di placca:\u003c\/span\u003e \u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Addizionali\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrofonicità: \u003c\/strong\u003eStandard. Testate e conformi per l'uso in hi-fi e amplificatori per chitarra.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eEccellente – Emissione molto forte e stabile, senza fluttuazioni.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCortocircuiti e GAS: \u003c\/strong\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:\u003cspan\u003e \u003c\/span\u003e\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\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\u003e312 6-31 - Fabbricata d SYLVANIA nel mese di Luglio del 1946\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":"DUMONT","offers":[{"title":"Default Title","offer_id":55334531400028,"sku":"03072U","price":445.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_32d80627-d5af-400e-9111-54534a027220.jpg?v=1715848134","url":"https:\/\/vacuumtubestreasures.com\/it-hk\/products\/5v3-5au4-dumont-nos-nib-black-plates-double-halo-getter-amplitrex-tested-tube-rectifier-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}