{"product_id":"12bh7a-westinghouse-black-plates-horse-shoe-getter-usa-1963-amplitrex-tested","title":"12BH7A WESTINGHOUSE Black Plates Horse Shoe Getter USA 1963 AMPLITREX Tested","description":"\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e12BH7A WESTINGHOUSE Black Plates Horse Shoe Getter – Made in USA – 1963\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Tested – STRONG – Low Noise \u0026amp; Microphonics – Vintage American WESTINGHOUSE Production\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eRisultati dei Test\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eValvole testate su\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCondizioni di Test:\u003c\/b\u003e\u003cspan\u003e \u003c\/span\u003eVa = 250V, Vg = -10.5V\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMedia 100%:\u003c\/b\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eGm = 3.10 ; Ia = 11.5 mA\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eRisultato del Test:\u003c\/b\u003e\u003c\/span\u003e FORTE\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003eValvola:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003e Sezione 1:\u003c\/strong\u003e Gm = 2.6 ; Ia = 8.2 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003e Sezione 2:\u003c\/strong\u003e Gm = 2.5 ; Ia = \u003cmeta charset=\"utf-8\"\u003e7.8 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTest Addizionali eseguiti\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p2\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eBurn-in \/ Stability Test:\u003c\/strong\u003e 48h – OK\u003c\/li\u003e\n\u003cli class=\"p3\"\u003e\n\u003cb\u003eMicrofonicità:\u003c\/b\u003e Bassa. Testate e conformi per l’impiego in apparecchiature hi-fi e amplificatori per chitarra, anche negli stadi audio più sensibili.\u003c\/li\u003e\n\u003cli class=\"p3\"\u003e\n\u003cb\u003eBilanciamento:\u003c\/b\u003e Molto buono. Le sezioni risultano coerenti e ben allineate, rendendo la valvola idonea anche all’impiego come phase inverter in applicazioni hi-fi e strumentali.\u003c\/li\u003e\n\u003cli class=\"p3\"\u003e\n\u003cb\u003eQualità dell’Emissione:\u003c\/b\u003e Forte – Emissione forte e regolare, adatta a qualsiasi applicazione.\u003c\/li\u003e\n\u003cli class=\"p2\"\u003e\n\u003cb\u003eCortocircuiti e GAS:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e Assenti.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"p2\"\u003e\u003cb\u003eDescrizione:\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eInteressante \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12BH7A WESTINGHOUSE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, prodotta negli Stati Uniti nel \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1963\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e e caratterizzata dalla ricercata costruzione \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBlack Plates con Horse Shoe Getter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, configurazione tipica delle robuste produzioni americane dell’epoca.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIl codice EIA \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e337\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e identifica \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eWestinghouse Electric Corporation\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, mentre il date code \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e63-09\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e colloca la produzione nella \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e9ª settimana del 1963\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, rendendo questo esemplare particolarmente interessante anche per restauri vintage e apparecchiature nelle quali si ricerca una 12BH7A americana originale del periodo.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLa \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12BH7A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e è un doppio triodo apprezzato negli stadi driver e di linea per la buona capacità di pilotaggio, la robustezza e la stabilità operativa. La costruzione \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBlack Plates\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e aggiunge ulteriore interesse a questo esemplare Westinghouse Made in USA, destinato a chi ricerca autentica produzione americana vintage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLa valvola è stata sottoposta a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e48 ore di burn-in \/ stability test\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e e successivamente accuratamente testata nel nostro laboratorio mediante \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAmplitrex AT-1000 Tube Tester\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, ottenendo classificazione \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSTRONG \/ FORTE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Le due sezioni presentano un \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebilanciamento molto buono\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, con transconduttanza particolarmente coerente, e la valvola è risultata inoltre \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLow Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, con emissione forte e regolare e nessuna anomalia rilevata.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eGrazie al buon equilibrio tra le sezioni e alla selezione \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLow Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, è particolarmente interessante per \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003estadi driver, line stage e phase inverter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, oltre che per amplificatori hi-fi e strumentali compatibili con \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12BH7 \/ 12BH7A\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, anche nelle posizioni audio più sensibili.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDal punto di vista sonoro, le 12BH7A americane vintage sono apprezzate per una presentazione solida, dinamica e naturale, con bassi ben presenti e controllati, medi corposi e definiti e una gamma alta pulita e ben articolata. La capacità di pilotaggio tipica della 12BH7A contribuisce a una riproduzione energica e autorevole nelle apparecchiature progettate per questa valvola.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLa valvola è \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVintage Used\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, accuratamente testata e perfettamente funzionante. Le condizioni estetiche sono \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebuone\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, con serigrafie parzialmente erose ma ancora leggibili e corpo della valvola in buono stato generale.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUn’autentica \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eWESTINGHOUSE 12BH7A Black Plates Horse Shoe Getter Made in USA del 1963\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, realmente testata e selezionata da \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVacuum Tubes Treasures\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, ideale per chi ricerca una 12BH7A americana vintage forte, ben bilanciata e silenziosa.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCondizioni\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p3\"\u003e\n\u003cb\u003eCondizioni:\u003c\/b\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale.\u003c\/li\u003e\n\u003cli class=\"p3\"\u003e\n\u003cb\u003eFunzionalità:\u003c\/b\u003e Perfettamente operative.\u003c\/li\u003e\n\u003cli class=\"p3\"\u003e\n\u003cb\u003eCondizioni estetiche:\u003c\/b\u003e Buone – Scritte parzialmente erose, ma ancora leggibili. Corpo della valvola in buone condizioni. Vedi foto per i dettagli.\u003c\/li\u003e\n\u003cli class=\"p2\"\u003e\n\u003cb\u003eCodice di Fabbricazione:\u003c\/b\u003e 63-09 337 → 337 → Westinghouse Electric Corporation, Baltimore 3, Md. - 63-09 → RMA\/EIA Open Date Code → fabbricata la 09ª settimana del 1963\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s2\"\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":"WESTINGHOUSE","offers":[{"title":"Default Title","offer_id":58856856879452,"sku":"03763N","price":43.0,"currency_code":"CHF","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_cf007ddb-2100-4ce5-a658-0361d9f1aae7.jpg?v=1787933632","url":"https:\/\/vacuumtubestreasures.com\/it-ch\/products\/12bh7a-westinghouse-black-plates-horse-shoe-getter-usa-1963-amplitrex-tested","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}