{"product_id":"5693-cv3699-rca-nos-special-red-amplitrex-tested-tube-made-in-usa-52","title":"5693 ( CV3699 ) RCA NOS SPECIAL RED AMPLITREX Tested Tube MADE IN USA '52","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003e5693 ( CV3699 ) RCA NOS SPECIAL RED Tested Tube MADE IN USA '52\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eAMPLITREX Tested – MOLTO FORTE\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eDescrizione Generale\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eQuesta \u003cspan class=\"s1\"\u003e\u003cb\u003e5693 (CV3699) RCA NOS “Special Red”\u003c\/b\u003e\u003c\/span\u003e, prodotta negli Stati Uniti nel \u003cspan class=\"s1\"\u003e\u003cb\u003emarzo 1952 (date code 3-52)\u003c\/b\u003e\u003c\/span\u003e, rappresenta una delle versioni più iconiche e ricercate della famiglia 6SL7.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLa serie \u003cspan class=\"s1\"\u003e\u003cb\u003e5693 Special Red\u003c\/b\u003e\u003c\/span\u003e è universalmente riconosciuta per la sua costruzione selezionata e per standard qualitativi superiori rispetto alle versioni standard. Il caratteristico \u003cspan class=\"s1\"\u003e\u003cb\u003erivestimento rosso\u003c\/b\u003e\u003c\/span\u003e non è solo un elemento estetico distintivo, ma identifica una produzione progettata per offrire \u003cspan class=\"s1\"\u003e\u003cb\u003estabilità, affidabilità e lunga durata operativa\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eQuesta valvola si distingue per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eRCA USA – produzione anni ’50\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003e5693 \/ CV3699 – versione speciale selezionata\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eCorpo rosso “Special Red”\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eDate Code 3-52\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eNOS (New Old Stock)\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eSi tratta di una \u003cspan class=\"s1\"\u003e\u003cb\u003evalvola singola selezionata e testata\u003c\/b\u003e\u003c\/span\u003e, proposta per la qualità complessiva e per la coerenza delle prestazioni.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eUna proposta di altissimo livello, che unisce \u003c\/span\u003e\u003cb\u003eprestigio storico, costruzione selezionata e una resa sonora di riferimento\u003c\/b\u003e\u003cspan class=\"s1\"\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003eCaratteristiche Sonore\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBassi\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eProfondi e controllati, con una struttura solida e autorevole che dona equilibrio alla scena.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMedi\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eRicchi, raffinati e tridimensionali. Le voci emergono con grande naturalezza e presenza, con una tessitura armonica estremamente elegante.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAlti\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eDolci e setosi, con una estensione naturale e una resa sempre fluida e mai affaticante.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDinamica\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLineare e controllata, con una risposta estremamente stabile e coerente.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAmpio, arioso e ben focalizzato, con una separazione eccellente e una profondità credibile.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎧 Uso in Amplificatori Hi-Fi\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIdeali per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003epreamplificatori di alto livello\u003c\/li\u003e\n\u003cli class=\"p1\"\u003estadi di ingresso\u003c\/li\u003e\n\u003cli class=\"p1\"\u003esistemi dove è richiesta massima stabilità e coerenza\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eGrazie alla selezione \u003cspan class=\"s2\"\u003e\u003cb\u003eSpecial Red\u003c\/b\u003e\u003c\/span\u003e, offrono un comportamento estremamente affidabile, con una resa sonora raffinata e controllata.\u003c\/p\u003e\n\u003ch3\u003e\u003cb\u003e🎸 Uso in Applicazioni Musicali\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003ePerfette per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003epreamplificatori valvolari\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eamplificatori per strumenti di qualità\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eOffrono:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003erisposta dinamica equilibrata\u003c\/li\u003e\n\u003cli class=\"p1\"\u003egrande definizione\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecarattere sonoro elegante e musicale\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\u003eRCA USA – anno 1952 (same date codes 3-52)\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003e5693 \/ CV3699 – Special Red\u003c\/b\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\" class=\"p1\"\u003e\u003cstrong\u003eValvola NOS selezionata e testata\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eClassificazione VTT: MOLTO FORTE\u003c\/b\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eUna vaolvola che rappresenta non solo una scelta tecnica, ma un vero \u003cspan class=\"s1\"\u003e\u003cb\u003eoggetto di culto per appassionati e collezionisti\u003c\/b\u003e\u003c\/span\u003e, capace di offrire una \u003cspan class=\"s1\"\u003e\u003cb\u003eesperienza sonora raffinata e una presenza estetica unica\u003c\/b\u003e\u003c\/span\u003e, nel pieno stile delle grandi valvole americane degli anni ’50.\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 = 100V; Vg = -3V \u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%:\u003c\/strong\u003e\u003cspan\u003e \u003cmeta charset=\"utf-8\"\u003eGm = 1.6 ; Ia = 3.0 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:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eGm = 1.6 ; Ia = 2.8 mA\u003c\/span\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 NOS - New Old Stock - Testata e funzionante - 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 Eccellenti – Scritte ottimamente conservate, minimi segni del tempo. Vedi foto per i dettagli.\u003c\/li\u003e\n\u003cli data-start=\"673\" data-end=\"797\"\u003e\n\u003cstrong data-start=\"675\" data-end=\"703\"\u003eCodice di fabbricazione:\u003c\/strong\u003e 3-52 → RMA\/EIA Open Date Code → fabbricata la 52ª settimana del 1953 → Radio Corporation of America, Camden, N. J.\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":"RCA","offers":[{"title":"Default Title","offer_id":57347493265756,"sku":"03527L","price":834.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_2ec85e50-3020-4a71-b224-c2ae999bc75b.jpg?v=1776100476","url":"https:\/\/vacuumtubestreasures.com\/it-se\/products\/5693-cv3699-rca-nos-special-red-amplitrex-tested-tube-made-in-usa-52","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}