{"product_id":"6sl7gt-sylvania-3-hole-black-plates-tall-boys-amplitrex-tested-pair-made-in-usa-50s","title":"6SL7GT SYLVANIA 3-Hole Black Plates Tall Boys AMPLITREX Tested Pair Made in USA '50s","description":"\u003cp\u003e\u003cstrong\u003e6SL7GT SYLVANIA 3-Hole Black Plates Tall Boys AMPLITREX Tested Pair Made in USA '50s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"0\" data-end=\"784\"\u003e\u003cstrong data-start=\"3\" data-end=\"27\"\u003eDescrizione Generale\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eQuesta \u003cspan class=\"s1\"\u003e\u003cb\u003ecoppia di 6SL7GT SYLVANIA “Tall Boys”\u003c\/b\u003e\u003c\/span\u003e, prodotta negli Stati Uniti negli anni ’50, rappresenta una delle configurazioni più affascinanti e riconoscibili della grande produzione americana.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eLe valvole si distinguono per una costruzione iconica e altamente apprezzata:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003e3-Hole Black Plates\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003estruttura \u003cspan class=\"s1\"\u003e\u003cb\u003eTall Boys\u003c\/b\u003e\u003c\/span\u003e (bottiglia alta, tipica delle prime produzioni)\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eDifferent Date Codes ma stesso anno di produzione\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003erealizzazione interamente \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eSi tratta di una \u003cspan class=\"s1\"\u003e\u003cb\u003ecoppia usata selezionata e testata\u003c\/b\u003e\u003c\/span\u003e, non una semplice combinazione casuale, ma una scelta consapevole basata su prestazioni reali e coerenza sonora.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003ePur non essendo una matched pair, le valvole presentano un \u003cspan class=\"s1\"\u003e\u003cb\u003eequilibrio interno coerente\u003c\/b\u003e\u003c\/span\u003e, pienamente compatibile con l’impiego in ambito hi-fi e musicale in tutte le applicazioni in cui non sia richiesta una simmetria stretta.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eTestate con \u003cspan class=\"s1\"\u003e\u003cb\u003eAmplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e, hanno ottenuto:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eRisultato: FORTE\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eClassificazione interna VTT: FORTE\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=\"p1\"\u003eUna proposta che unisce \u003cspan class=\"s1\"\u003e\u003cb\u003efascino storico, qualità costruttiva e resa musicale autentica\u003c\/b\u003e\u003c\/span\u003e, superiore alla media delle coppie usate generiche.\u003c\/p\u003e\n\u003ch3 data-start=\"786\" data-end=\"999\"\u003e\n\u003cstrong data-start=\"788\" data-end=\"814\"\u003eCaratteristiche Sonore\u003c\/strong\u003e\u003cbr data-start=\"814\" data-end=\"817\"\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBassi\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eMorbidi e ben articolati, con una presenza naturale che sostiene la scena senza appesantirla.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMedi\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePunto di forza assoluto: ricchi, materici e tridimensionali. Le voci emergono con grande naturalezza e coinvolgimento.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAlti\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDolci e ben estesi, mai aggressivi. Offrono aria e dettaglio mantenendo una resa sempre musicale.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDinamica\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFluida e progressiva, con una risposta naturale che privilegia la musicalità e la coerenza.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoundstage\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAmpio e arioso, con una scena ben sviluppata e una separazione credibile degli strumenti.\u003c\/p\u003e\n\u003ch3 data-end=\"1875\" data-start=\"1819\"\u003e🎧 \u003cstrong data-end=\"1859\" data-start=\"1822\"\u003eUso in Amplificatori Hi-Fi Stereo\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIdeali per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003epreamplificatori valvolari\u003c\/li\u003e\n\u003cli class=\"p1\"\u003estadi di ingresso\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecircuiti dove è richiesta musicalità e naturalezza\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eGrazie al \u003cspan class=\"s1\"\u003e\u003cb\u003ebasso rumore e alla buona coerenza interna\u003c\/b\u003e\u003c\/span\u003e, si inseriscono con facilità nella maggior parte delle configurazioni hi-fi, offrendo un suono naturale e coinvolgente.\u003c\/p\u003e\n\u003ch3 data-end=\"2229\" data-start=\"2177\"\u003e🎸 \u003cstrong data-end=\"2213\" data-start=\"2180\"\u003eUso in Amplificatori Musicali\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eOttima scelta per:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eamplificatori per strumenti vintage\u003c\/li\u003e\n\u003cli class=\"p1\"\u003epreamplificatori valvolari\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eOffrono:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003egrande espressività nei medi\u003c\/li\u003e\n\u003cli class=\"p1\"\u003erisposta dinamica musicale\u003c\/li\u003e\n\u003cli class=\"p1\"\u003ecarattere sonoro autenticamente “vintage”\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-end=\"2611\" data-start=\"2509\"\u003e🎯 \u003cstrong data-end=\"2544\" data-start=\"2512\"\u003eNota per audiofili e tecnici\u003c\/strong\u003e\u003cbr data-end=\"2547\" data-start=\"2544\"\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eSYLVANIA USA – anni ’50\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003e3-Hole Black Plates – Tall Boys\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eDifferent Date Codes (stesso anno)\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eCoppia selezionata, non matched\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=\"p1\"\u003eUna coppia che esprime \u003cspan class=\"s1\"\u003e\u003cb\u003eidentità, coerenza e musicalità\u003c\/b\u003e\u003c\/span\u003e, pensata per chi desidera una \u003cspan class=\"s1\"\u003e\u003cb\u003e6SL7 americana autentica\u003c\/b\u003e\u003c\/span\u003e, selezionata con criterio e capace di offrire un’esperienza sonora credibile e appagante.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 data-end=\"3436\" data-start=\"3046\"\u003e\u003cstrong\u003eRisultati dei Test:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValvole testate su \u003cstrong\u003eAmplitrex AT-1000 Tube tester\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondizioni di Test:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003eVa = 250V, Vg = -2V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia 100%: \u003c\/strong\u003eGm = 1600 ; Ia = 2.3 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRisultato del Test:\u003c\/strong\u003e FORTE\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValvola 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSezione 1: Gm = 1500 ; Ia = 2.3 mA\u003c\/li\u003e\n\u003cli\u003eSezione 2: Gm = \u003cmeta charset=\"utf-8\"\u003e1400 ; Ia = 2.1 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\u003eSezione 1: Gm = 1200 ; Ia = 2.0 mA\u003c\/li\u003e\n\u003cli\u003eSezione 2: Gm = \u003cmeta charset=\"utf-8\"\u003e1300 ; Ia = 2.2 mA\u003c\/li\u003e\n\u003c\/ul\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 Bassa. Testate e conformi per l'uso in hi-fi anche in stadi phono e in amplificatori per chitarra. Adatte anche in V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cstrong\u003eBilanciamento: \u003c\/strong\u003e\u003c\/span\u003eLe sezioni presentano un equilibrio coerente, pienamente compatibile con l’impiego in ambito hi-fi e negli amplificatori musicali, in tutte le applicazioni in cui non sia richiesta una simmetria assoluta.\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eQualità dell’Emissione:\u003c\/strong\u003e Forte – 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 scatola Originale.\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 Eccellenti – Scritte ottimamente conservate, minimi segni del tempo. 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\u003e018 → Sylvania Electric Products Inc., Emporium, Pa. - \u003cmeta charset=\"utf-8\"\u003e018 → 0 ( su tre cifre ) → 1950 - 18 → 18a settimana dell'anno\u003c\/li\u003e\n\u003cli\u003e\n\u003cmeta charset=\"utf-8\"\u003e022 → Sylvania Electric Products Inc., Emporium, Pa. - \u003cmeta charset=\"utf-8\"\u003e018 → 0 ( su tre cifre ) → 1950 - 22 → 22a settimana dell'anno\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":"SYLVANIA","offers":[{"title":"Default Title","offer_id":57302117417308,"sku":"03516","price":99.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_87bc1dd6-250d-43ec-aff2-ba321c6fcf5e.jpg?v=1775665745","url":"https:\/\/vacuumtubestreasures.com\/it-gr\/products\/6sl7gt-sylvania-3-hole-black-plates-tall-boys-amplitrex-tested-pair-made-in-usa-50s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}