{"product_id":"el84-6bq5-sylvania-for-baldwin-gray-plates-matched-tubes-made-in-usa-56","title":"EL84 6BQ5 Baldwin\/SYLVANIA Matched Quad Gray Plates Halo Getter Tubes Made in USA '55","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cstrong\u003eEL84 ( 6BQ5 ) Baldwin\/SYLVANIA Matched Quad Gray Plates Halo Getter Tubes Made in USA '55\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"454\" data-end=\"1197\"\u003eQuesto quartetto matched di \u003cstrong data-start=\"482\" data-end=\"497\"\u003eEL84 (6BQ5)\u003c\/strong\u003e marchiate \u003cstrong data-start=\"508\" data-end=\"519\"\u003eBaldwin\u003c\/strong\u003e e prodotte da \u003cstrong data-start=\"534\" data-end=\"559\"\u003eSylvania USA nel 1955\u003c\/strong\u003e rappresenta una delle massime espressioni della produzione americana del dopoguerra.\u003cbr data-start=\"644\" data-end=\"647\"\u003eLa costruzione con \u003cstrong data-start=\"666\" data-end=\"681\"\u003egray plates\u003c\/strong\u003e, \u003cstrong data-start=\"683\" data-end=\"717\"\u003egetter ad anello (Halo Getter)\u003c\/strong\u003e e struttura compatta con base nera offre una combinazione esemplare di \u003cstrong data-start=\"789\" data-end=\"844\"\u003erobustezza, equilibrio tonale e precisione dinamica\u003c\/strong\u003e.\u003cbr data-start=\"845\" data-end=\"848\"\u003eLe valvole Baldwin\/Sylvania venivano selezionate per impieghi in apparecchiature audio professionali e organi elettrici di fascia alta, dove erano richieste \u003cstrong data-start=\"1005\" data-end=\"1059\"\u003ebassa microfonicità e stabilità elettrica assoluta\u003c\/strong\u003e.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"1204\" data-end=\"1232\"\u003e\u003cstrong data-start=\"1206\" data-end=\"1232\"\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1236\" data-end=\"1363\"\u003e\n\u003cstrong data-start=\"1236\" data-end=\"1246\"\u003eBassi:\u003c\/strong\u003e solidi e controllati, con ottimo ancoraggio al registro medio-basso; nessuna tendenza all’enfasi o alla risonanza.\u003c\/li\u003e\n\u003cli data-start=\"1366\" data-end=\"1470\"\u003e\n\u003cstrong data-start=\"1366\" data-end=\"1375\"\u003eMedi:\u003c\/strong\u003e autentici e corposi, con timbro naturale e presenza realistica di voci e strumenti acustici.\u003c\/li\u003e\n\u003cli data-start=\"1473\" data-end=\"1573\"\u003e\n\u003cstrong data-start=\"1473\" data-end=\"1482\"\u003eAlti:\u003c\/strong\u003e estesi ma mai aggressivi, con una brillantezza raffinata tipica delle Sylvania anni ’50.\u003c\/li\u003e\n\u003cli data-start=\"1576\" data-end=\"1686\"\u003e\n\u003cstrong data-start=\"1576\" data-end=\"1589\"\u003eDinamica:\u003c\/strong\u003e reattiva e proporzionata; microcontrasto eccellente che valorizza il dettaglio senza rigidità.\u003c\/li\u003e\n\u003cli data-start=\"1689\" data-end=\"1829\"\u003e\n\u003cstrong data-start=\"1689\" data-end=\"1704\"\u003eSoundstage:\u003c\/strong\u003e ampio e profondo, con immagine stabile e coerente; restituisce un senso di realismo tridimensionale raro nelle EL84 moderne.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1836\" data-end=\"1869\"\u003e🎧 \u003cstrong data-start=\"1839\" data-end=\"1869\"\u003eUso in Amplificatori Hi-Fi\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1871\" data-end=\"2279\"\u003eIdeali per amplificatori \u003cstrong data-start=\"1896\" data-end=\"1909\"\u003epush-pull\u003c\/strong\u003e o \u003cstrong data-start=\"1912\" data-end=\"1928\"\u003esingle-ended\u003c\/strong\u003e di fascia alta, queste EL84 Baldwin\/Sylvania esprimono \u003cstrong data-start=\"1984\" data-end=\"2016\"\u003emusicalità fluida e naturale\u003c\/strong\u003e, mantenendo \u003cstrong data-start=\"2029\" data-end=\"2076\"\u003esilenziosità di fondo e precisione timbrica\u003c\/strong\u003e.\u003cbr data-start=\"2077\" data-end=\"2080\"\u003ePerfette in apparecchi vintage americani o europei (Dynaco, Eico, Leak, Fisher), donano una presentazione sonora equilibrata e priva di fatica, con un medio straordinariamente naturale e trasparente.\u003c\/p\u003e\n\u003cp data-start=\"2286\" data-end=\"2322\"\u003e🎸 \u003cstrong data-start=\"2289\" data-end=\"2322\"\u003eUso in Amplificatori Musicali\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2324\" data-end=\"2778\"\u003eIn ambito musicale, offrono un suono \u003cstrong data-start=\"2361\" data-end=\"2388\"\u003earmonico, caldo e pieno\u003c\/strong\u003e, con headroom generoso e risposta dinamica costante anche sotto carico.\u003cbr data-start=\"2460\" data-end=\"2463\"\u003eParticolarmente indicate per amplificatori \u003cstrong data-start=\"2506\" data-end=\"2523\"\u003eVox AC15\/AC30\u003c\/strong\u003e, \u003cstrong data-start=\"2525\" data-end=\"2541\"\u003eMarshall 18W\u003c\/strong\u003e, \u003cstrong data-start=\"2543\" data-end=\"2556\"\u003eMatchless\u003c\/strong\u003e, o repliche boutique, dove la loro \u003cstrong data-start=\"2592\" data-end=\"2618\"\u003epasta sonora americana\u003c\/strong\u003e conferisce corpo, sustain e definizione nelle armoniche.\u003cbr data-start=\"2675\" data-end=\"2678\"\u003eIl basso rumore di fondo le rende eccellenti anche per \u003cstrong data-start=\"2733\" data-end=\"2753\"\u003estudio recording\u003c\/strong\u003e e \u003cstrong data-start=\"2756\" data-end=\"2777\"\u003euso professionale\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2785\" data-end=\"2820\"\u003e🎯 \u003cstrong data-start=\"2788\" data-end=\"2820\"\u003eNota per Audiofili e Tecnici\u003c\/strong\u003e\u003cstrong data-start=\"2824\" data-end=\"2869\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3183\" data-end=\"3312\"\u003eUn quartetto dal carattere \u003cstrong data-start=\"3210\" data-end=\"3238\"\u003enobile, caldo e naturale\u003c\/strong\u003e, capace di coniugare \u003cstrong data-start=\"3260\" data-end=\"3311\"\u003eprecisione timbrica e fascino vintage autentico\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr data-start=\"3314\" data-end=\"3317\"\u003e\n\u003cp data-start=\"3319\" data-end=\"3344\"\u003e\u003cstrong data-start=\"3322\" data-end=\"3344\"\u003eRisultati dei Test\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3346\" data-end=\"3542\"\u003eValvole testate su \u003cstrong data-start=\"3365\" data-end=\"3398\"\u003eAmplitrex AT-1000 \u003c\/strong\u003eTube Tester\u003cbr data-start=\"3398\" data-end=\"3401\"\u003e\u003cstrong data-start=\"3401\" data-end=\"3424\"\u003eCondizioni di test:\u003c\/strong\u003e Va = 250 V, Vg = –8 V\u003cbr data-start=\"3446\" data-end=\"3449\"\u003e\u003cstrong data-start=\"3449\" data-end=\"3471\"\u003eValore medio 100%:\u003c\/strong\u003e Gm = 11,3 ; Ia = 48 mA\u003cbr data-start=\"3499\" data-end=\"3502\"\u003e\u003cstrong data-start=\"3502\" data-end=\"3528\"\u003eRisultato del Test:\u003c\/strong\u003e FORTE\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvola 1:\u003c\/strong\u003e Gm = 9,6 ; Ia = 41,4 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvola 2:\u003c\/strong\u003e Gm = 10,2 ; Ia = 42,6 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvola 3:\u003c\/strong\u003e Gm = 9,8 ; Ia = 39,2 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eValvola 4:\u003c\/strong\u003e Gm = 9,8 ; Ia = 38,0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"_tableContainer_1rjym_1\"\u003e\n\u003cdiv class=\"group _tableWrapper_1rjym_13 flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eTest Addizionali eseguiti:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrofonicità:\u003c\/strong\u003e Bassa. 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 Eccellente – Emissione forte e stabile, senza fluttuazioni.\u003cstrongr\u003e\u003c\/strongr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCortocircuiti e GAS: Assenti.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3868\" data-end=\"3871\"\u003e\n\u003ch3\u003e\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e\u003cspan\u003e Valvole Vintage - Testate e perfettamente funzionanti. Fornite in nostra scatola personalizzata per una protezione ottimale.\u003c\/span\u003e\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 Molto Buone – Scritte ben leggibili con lievi segni del tempo, nessun difetto evidente. 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 526 → 312 indica il fabbricante, ovvero Sylvania Electric Products Inc., Emporium, Pa. - 526 → 5 ( su tre cifre ) → 1955 - 26 → 26a settimana dell'anno\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":"SYLVANIA","offers":[{"title":"Default Title","offer_id":42983318323447,"sku":"00697","price":129.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_23c984be-7a0d-4078-a472-952cb470926d.jpg?v=1760471063","url":"https:\/\/vacuumtubestreasures.com\/it-hr\/products\/el84-6bq5-sylvania-for-baldwin-gray-plates-matched-tubes-made-in-usa-56","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}