{"product_id":"12bh7-rca-nos-nib-black-plates-horse-shoe-getter-usa-1960s-amplitrex-tested","title":"12BH7 RCA NOS NIB Black Plates Horse Shoe Getter USA 1960s AMPLITREX Tested","description":"\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e12BH7 RCA NOS NIB Black Plates Horse Shoe Getter – Made in USA – 1960s\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Tested – VERY STRONG – Low Noise \u0026amp; Microphonics – Vintage American RCA 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 MOLTO 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 = 3.10 ; Ia = 10.2 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003e Sezione 2:\u003c\/strong\u003e Gm = 3.10 ; Ia = \u003cmeta charset=\"utf-8\"\u003e10.8 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 Eccellente – Emissione molto forte e stabile, senza fluttuazioni.\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\u003ePregiata \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12BH7 RCA NOS NIB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, produzione americana vintage attribuibile agli \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eanni ’60\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, caratterizzata dalla ricercata costruzione \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBlack Plates con Horse Shoe Getter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, una delle configurazioni più interessanti della produzione RCA americana del periodo.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLa \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12BH7\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e è un doppio triodo particolarmente 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 di questo esemplare RCA ne aumenta ulteriormente l’interesse per gli appassionati di valvole americane vintage e per apparecchiature hi-fi e strumentali di qualità.\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\u003eVERY STRONG \/ MOLTO FORTE\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Entrambe le sezioni raggiungono \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eGm 3100\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, corrispondente al valore di riferimento del 100%, con correnti anodiche molto vicine e un \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ebilanciamento molto buono\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. 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 molto forte e stabile e nessuna anomalia rilevata.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eL’eccellente uniformità delle sezioni e la selezione \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLow Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e la rendono 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 apparecchiature hi-fi e amplificatori per strumenti 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 RCA Black Plate americane sono apprezzate per una riproduzione corposa, dinamica e naturale, con bassi solidi e ben controllati, una gamma media ricca e musicale e alte frequenze pulite e ben definite. Il carattere complessivo conserva la tipica musicalità della produzione RCA vintage, abbinandola alla capacità di pilotaggio e all’autorevolezza proprie della famiglia 12BH7.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLa valvola è \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNOS NIB – New Old Stock, New In Box\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, accuratamente testata e perfettamente funzionante, fornita nella sua \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003escatola originale RCA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Le condizioni estetiche sono buone, con serigrafie parzialmente erose ma ancora leggibili e corpo della valvola ben conservato.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUn’eccellente \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRCA 12BH7 Black Plates Horse Shoe Getter Made in USA\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 un’autentica 12BH7 americana NOS, molto 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 NOS - NIB - New Old Stock, New In Box - Testata e funzionante - Fornite in scatola Originale.\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 Codice non decifrabile. Produzione attribuibile indicativamente agli anni ’60 sulla base delle caratteristiche costruttive.\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":"RCA","offers":[{"title":"Default Title","offer_id":58857394602332,"sku":"03764N","price":610.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/11_653c8e11-b682-4b54-9f5a-c4a0ecf6afc0.jpg?v=1787934992","url":"https:\/\/vacuumtubestreasures.com\/it-dk\/products\/12bh7-rca-nos-nib-black-plates-horse-shoe-getter-usa-1960s-amplitrex-tested","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}