{"product_id":"12ax7-ecc83-wurlitzer-by-ge-matched-pair-long-gray-plates-halo-getter-made-in-usa-63","title":"12AX7 \/ ECC83 Wurlitzer by GE Matched Pair Long Gray Plates Halo Getter Made in USA '63","description":"\u003cp\u003e\u003cstrong\u003e12AX7 \/ ECC83 Wurlitzer by GE Matched Pair Long Gray Plates Halo Getter Made in USA '63\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eQuesta \u003cspan class=\"s1\"\u003e\u003cb\u003ecoppia matched di 12AX7 \/ ECC83 marchiate Wurlitzer\u003c\/b\u003e\u003c\/span\u003e, prodotte da \u003cspan class=\"s1\"\u003e\u003cb\u003eGeneral Electric negli Stati Uniti nel 1963\u003c\/b\u003e\u003c\/span\u003e, rappresenta una selezione di valvole di segnale americane destinate originariamente ad applicazioni professionali.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIl marchio \u003cspan class=\"s1\"\u003e\u003cb\u003eWurlitzer\u003c\/b\u003e\u003c\/span\u003e, noto per strumenti musicali e jukebox di alta qualità, si affidava a fornitori come GE per valvole selezionate e affidabili. La costruzione interna è infatti quella tipica \u003cspan class=\"s1\"\u003e\u003cb\u003eGeneral Electric\u003c\/b\u003e\u003c\/span\u003e dell’epoca, sinonimo di solidità e coerenza produttiva.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLa struttura include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecostruzione robusta e precisa tipica GE anni ’60\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eLe valvole sono state \u003cspan class=\"s1\"\u003e\u003cb\u003eaccuratamente selezionate come Matched Pair\u003c\/b\u003e\u003c\/span\u003e e testate nel nostro laboratorio su \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000\u003c\/b\u003e\u003c\/span\u003e, con risultato \u003cspan class=\"s1\"\u003e\u003cb\u003eSTRONG\u003c\/b\u003e\u003c\/span\u003e. Sono inoltre risultate \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e, rendendole adatte anche a posizioni sensibili del circuito.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eLe \u003cspan class=\"s1\"\u003e\u003cb\u003eGE long plates\u003c\/b\u003e\u003c\/span\u003e offrono una presentazione sonora equilibrata, con un carattere leggermente più aperto e disteso rispetto alle versioni short plate.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eBassi: \u003c\/b\u003eBen estesi e controllati. La gamma bassa è solida e articolata, con buona profondità e stabilità.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eMedi: \u003c\/b\u003eChiari e naturali. Le voci emergono con buona presenza e definizione, mentre strumenti acustici mantengono una resa armonica equilibrata.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eAlti: \u003c\/b\u003eAperti e ariosi. L’estremo alto è ben esteso e pulito, con una grana fine che favorisce una buona leggibilità del dettaglio.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eDinamica: \u003c\/b\u003eReattiva e lineare. Le variazioni dinamiche vengono riprodotte con precisione e naturalezza.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eSoundstage: \u003c\/b\u003eScena sonora ampia e ben organizzata, con buona separazione degli strumenti e una presentazione stabile.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎧 \u003c\/span\u003eUso in Amplificatori Hi-Fi\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eLe \u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 GE long plate\u003c\/b\u003e\u003c\/span\u003e sono particolarmente indicate per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003epreamplificatori valvolari\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003estadi phono\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003edriver di amplificatori\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eapparecchi hi-fi vintage e moderni\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003e\u003cspan class=\"s3\"\u003eLa combinazione di \u003c\/span\u003e\u003cb\u003ebasso rumore e microfonicità contenuta\u003c\/b\u003e\u003cspan class=\"s3\"\u003e le rende adatte anche per \u003c\/span\u003e\u003cb\u003eposizioni critiche come V1\u003c\/b\u003e\u003cspan class=\"s3\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎸 \u003c\/span\u003eUso in Applicazioni Musicali\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eQueste valvole sono apprezzate anche in amplificatori per strumenti musicali per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003erisposta dinamica equilibrata\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ebuona definizione del segnale\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecomportamento stabile nel tempo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eCaratteristiche che le rendono versatili sia per utilizzo in studio sia dal vivo.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎯 \u003c\/span\u003eNota per audiofili\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eWurlitzer by General Electric – Made in USA\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eAnno di produzione: 1963\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eLong Gray Plates – Halo Getter\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eMatched Pair selezionata\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tested\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eTest STRONG\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003e\u003cspan class=\"s2\"\u003eUna \u003c\/span\u003e\u003cb\u003ecoppia selezionata di 12AX7 GE anni ’60\u003c\/b\u003e\u003cspan class=\"s2\"\u003e, con marchio Wurlitzer, che unisce \u003c\/span\u003e\u003cb\u003eaffidabilità, silenziosità e musicalità equilibrata\u003c\/b\u003e\u003cspan class=\"s2\"\u003e, ideale per applicazioni hi-fi e musicali nel pieno stile \u003c\/span\u003e\u003cb\u003eVacuum Tubes Treasures\u003c\/b\u003e\u003cspan class=\"s2\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTestate su AMPLITREX AT-1000 Tube Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 250V, Vg = -2V\u003cstrong\u003e\u003cbr\u003eMedia 100%:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eGm = 1600 ; Ia = 1.2 mA\u003cstrong\u003e\u003cbr\u003eRISULTATO DEL TEST:\u003c\/strong\u003e FORTE\u003c\/p\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: Gm = 1400 ; Ia = 0.7 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2\u003c\/strong\u003e: Gm = \u003cmeta charset=\"utf-8\"\u003e1400 ; Ia = 0.7 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: Gm = \u003cmeta charset=\"utf-8\"\u003e1400 ; Ia = 0.8 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2\u003c\/strong\u003e: Gm = 1300 ; Ia = 0.7 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\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 Low Noise \u0026amp; Microphonics – Testate e conformi per l'uso in sistemi hi-fi e amplificatori per chitarra.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Molto Buona – Emissione forte e regolare, adatta a qualsiasi applicazione.\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 Valvole Vintage - Testate e perfettamente funzionanti. 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\u003cspan\u003e Buone – Scritte parzialmente erose, ma ancora leggibili. Corpo della valvola in buone condizioni. Vedi foto per i dettagli.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCodice di Fabbricazione:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan\u003e63-22 188 → RMA\/EIA Open Date Code → fabbricata la 22ª settimana del 1963 - 188 → General Electric Company, Syracuse 1, N. Y.\u003c\/span\u003e\n\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":"GE","offers":[{"title":"Default Title","offer_id":57026442068316,"sku":"03471","price":64.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_3c674173-f51e-40a9-a82d-8ce1da5a9b16.jpg?v=1773736136","url":"https:\/\/vacuumtubestreasures.com\/it-lu\/products\/12ax7-ecc83-wurlitzer-by-ge-matched-pair-long-gray-plates-halo-getter-made-in-usa-63","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}