{"product_id":"6v6gt-nos-national-union-matched-pair-smoked-glass-black-plates-foil-getter-made-in-usa-50s","title":"6V6GT NOS National Union Matched Pair Smoked Glass Black Plates Foil Getter Made in USA '50s","description":"\u003cp class=\"p1\"\u003e\u003cb\u003e6V6GT NOS NU (National Union) – Smoked Glass – Black Plates – Foil Getter – Matched Pair – Made in USA ‘50s\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eVACUUM TUBES TREASURES Selection – Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eDescrizione Generale\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eProponiamo una affascinante \u003cspan class=\"s1\"\u003e\u003cb\u003ecoppia matched di 6V6GT NOS National Union (NU)\u003c\/b\u003e\u003c\/span\u003e, prodotta negli Stati Uniti negli anni ’50, una delle epoche più iconiche per la costruzione di valvole termoioniche.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eQueste valvole si distinguono per una costruzione tipica della produzione americana di alta qualità:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eSmoked Glass (vetro oscurato)\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eBlack Plates\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eFoil Getter\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003estruttura interna robusta e raffinata\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eIl marchio \u003cspan class=\"s1\"\u003e\u003cb\u003eNational Union\u003c\/b\u003e\u003c\/span\u003e è storicamente riconosciuto per produzioni dal carattere sonoro distintivo, spesso molto apprezzate per musicalità e naturalezza.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLe valvole sono state selezionate come \u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Pair entro tolleranza NOS (Ia 10% \/ Gm 20%)\u003c\/b\u003e\u003c\/span\u003e, garantendo un comportamento elettrico coerente e affidabile.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e⚠️ Le valvole presentano \u003cspan class=\"s1\"\u003e\u003cb\u003ecodici di fabbricazione differenti\u003c\/b\u003e\u003c\/span\u003e, ma risultano perfettamente compatibili e correttamente accoppiate dal punto di vista elettrico.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eCaratteristiche Sonore\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eLe 6V6GT National Union anni ’50 offrono una firma sonora calda, musicale e profondamente coinvolgente.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eBassi\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eMorbidi ma presenti, con buona articolazione e naturalezza.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eMedi\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003ePunto di forza assoluto: pieni, materici e ricchi di armoniche, con una resa delle voci estremamente realistica.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eAlti\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eDolci e rotondi, mai aggressivi, perfetti per ascolti prolungati.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eDinamica\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eProgressiva e musicale, con una risposta fluida che privilegia la coerenza timbrica.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eNaturale e credibile, con buona profondità e ottima separazione.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎧 Uso in Amplificatori Hi-Fi\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003ePerfette per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eamplificatori single-ended e push-pull basati su \u003cspan class=\"s1\"\u003e\u003cb\u003e6V6\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"p1\"\u003esistemi hi-fi orientati alla musicalità e al realismo timbrico\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eGrazie alla selezione e al basso rumore, sono adatte anche a configurazioni sensibili.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎸 Uso in Applicazioni Musicali\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIdeali per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eamplificatori per chitarra vintage-style\u003c\/li\u003e\n\u003cli class=\"p1\"\u003epreamp valvolari\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eOffrono:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003ebreakup morbido e progressivo\u003c\/li\u003e\n\u003cli class=\"p1\"\u003erisposta armonica ricca\u003c\/li\u003e\n\u003cli class=\"p1\"\u003esuono caldo e tridimensionale\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003e🎯 Nota per audiofili e tecnici\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eNational Union – Made in USA – anni ’50\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eSmoked Glass – Black Plates – Foil Getter\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eMatched Pair (NOS tolerance)\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eSelezionate e testate nel nostro laboratorio\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003e\u003cspan class=\"s2\"\u003e⚠️ \u003c\/span\u003e\u003cb\u003eCondizioni estetiche:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eBuone – scritte parzialmente erose ma ancora leggibili.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eUna valvola presenta una\u003cspan class=\"s3\"\u003e\u003cb\u003e crepa sulla base in plastica\u003c\/b\u003e\u003c\/span\u003e, visibile in foto.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eSi tratta di un difetto esclusivamente estetico che \u003cspan class=\"s3\"\u003e\u003cb\u003enon influisce sul funzionamento\u003c\/b\u003e\u003c\/span\u003e, come verificato nei test.\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 \u003cmeta charset=\"utf-8\"\u003eVa = 250V; Vg2 = 250V; Vg = -12.5V \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eMisure prese dopo 10 minuti di riscaldamento.\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eGm = 4.1 ; Ia = 45 mA\u003c\/span\u003e\n\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\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eValvola 1:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eGm = 4.3 ; Ia = 41.6 mA\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003eValvola 2:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eGm = 3.8 ; Ia = 45.8 mA\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\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\u003eBassa. Testate e conformi per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra.\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 data-start=\"221\" data-end=\"371\"\u003e\n\u003cstrong data-start=\"223\" data-end=\"233\"\u003eStato:\u003c\/strong\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale. \u003c\/li\u003e\n\u003cli data-start=\"372\" data-end=\"456\"\u003e\n\u003cstrong data-start=\"374\" data-end=\"391\"\u003eFunzionalità:\u003c\/strong\u003e Perfettamente operative, con risultati di test eccellenti.\u003c\/li\u003e\n\u003cli data-start=\"457\" data-end=\"672\"\u003e\n\u003cstrong data-start=\"459\" data-end=\"484\"\u003eCondizioni estetiche:\u003c\/strong\u003e Buone – Scritte parzialmente erose, ma ancora leggibili. \u003cmeta charset=\"utf-8\"\u003e\n\u003cp class=\"p4\"\u003eUna valvola presenta una\u003cspan class=\"s3\"\u003e\u003cb\u003e crepa sulla base in plastica\u003c\/b\u003e\u003c\/span\u003e, visibile in foto. Si tratta di un difetto esclusivamente estetico che \u003cspan class=\"s3\"\u003e\u003cb\u003enon influisce sul funzionamento\u003c\/b\u003e\u003c\/span\u003e, come verificato nei test. Vedi foto per i dettagli.\u003c\/p\u003e\n\u003cstrong data-start=\"675\" data-end=\"703\"\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong data-start=\"675\" data-end=\"703\"\u003eCodice di fabbricazione: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e51-39 \u003cmeta charset=\"utf-8\"\u003e→ RMA\/EIA Open Date Code → fabbricata la 39ª settimana del 1951\u003c\/li\u003e\n\u003cli\u003eKR S \u003cmeta charset=\"utf-8\"\u003e→ non decifrabile, identificabile per caratteristiche costruttive. Anni ’50\u003c\/li\u003e\n\u003c\/ul\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":"NATIONAL UNION","offers":[{"title":"Default Title","offer_id":57247845744988,"sku":"03496V","price":140.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_1fcb0462-e3f1-4e74-bd48-2d7c31042b12.jpg?v=1775117338","url":"https:\/\/vacuumtubestreasures.com\/it-ch\/products\/6v6gt-nos-national-union-matched-pair-smoked-glass-black-plates-foil-getter-made-in-usa-50s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}