{"product_id":"12au7a-ecc82-nos-baldwin-by-sylvania-long-gray-plates-halo-getter-matched-quad-tubes-made-in-usa-60s","title":"12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Matched Quad Tubes Made in USA '60s","description":"\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7 \/ ECC82 NOS Baldwin by SYLVANIA Matched Quad Long Gray Plates Halo Getter AMPLITREX Tested Made in USA ’60\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Matched Quad – Low Noise \u0026amp; Microphonics – Vintage American SYLVANIA Production\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDescrizione\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eQuesto quartetto matched di \u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7 \/ ECC82 NOS Baldwin by Sylvania\u003c\/b\u003e\u003c\/span\u003e, produzione \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA 1960\u003c\/b\u003e\u003c\/span\u003e, rappresenta una selezione americana di alto livello, pensata per applicazioni hi-fi e musicali dove coerenza tra le valvole, silenziosità e stabilità operativa sono aspetti fondamentali.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLe valvole marchiate \u003cspan class=\"s1\"\u003e\u003cb\u003eBaldwin\u003c\/b\u003e\u003c\/span\u003e erano destinate ad applicazioni musicali e professionali, in particolare organi elettronici di qualità, dove venivano richieste valvole affidabili, stabili e silenziose. Dietro il marchio Baldwin troviamo in questo caso la produzione \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Electric Products Inc.\u003c\/b\u003e\u003c\/span\u003e, riconoscibile dalla costruzione con \u003cspan class=\"s1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/span\u003e e \u003cspan class=\"s1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eIl quartetto proviene dallo stesso codice di fabbricazione \u003cspan class=\"s1\"\u003e\u003cb\u003e312 052\u003c\/b\u003e\u003c\/span\u003e, riconducibile alla \u003cspan class=\"s1\"\u003e\u003cb\u003e52ª settimana del 1960\u003c\/b\u003e\u003c\/span\u003e. Questo elemento aggiunge valore tecnico e collezionistico, offrendo grande coerenza produttiva tra i quattro esemplari.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLe valvole sono in condizioni \u003cspan class=\"s1\"\u003e\u003cb\u003eNOS – New Old Stock\u003c\/b\u003e\u003c\/span\u003e, testate e selezionate tramite \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e come \u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Quad\u003c\/b\u003e\u003c\/span\u003e, con risultato complessivo \u003cspan class=\"s1\"\u003e\u003cb\u003eMOLTO FORTE\u003c\/b\u003e\u003c\/span\u003e, bassa microfonicità, basso rumore e \u003cspan class=\"s1\"\u003e\u003cb\u003eBurning Test 48h superato\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eIl punto di forza di questo quartetto non è soltanto lo stato elettrico molto solido, ma soprattutto la coerenza dei valori tra le quattro valvole, caratteristica particolarmente importante negli apparecchi che utilizzano più 12AU7 \/ ECC82 nello stesso circuito.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eDal punto di vista estetico, il quartetto si presenta in condizioni \u003cspan class=\"s1\"\u003e\u003cb\u003eeccellenti\u003c\/b\u003e\u003c\/span\u003e, con scritte ottimamente conservate, struttura interna pulita e minimi segni del tempo. Vedere foto per i dettagli.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCaratteristiche timbriche e descrizione sonora\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eLe Sylvania Long Gray Plates dei primi anni ’60 sono apprezzate per una resa sonora equilibrata, aperta e naturale, con una musicalità americana molto riconoscibile.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eIn questa selezione matched quad, la coerenza tra le quattro valvole contribuisce a una presentazione stabile, ordinata e molto piacevole, ideale per apparecchi che utilizzano più 12AU7 \/ ECC82 nello stesso circuito.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBassi\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLa gamma bassa è controllata, articolata e ben sostenuta. Offre una base solida senza risultare invadente, mantenendo ritmo e pulizia anche nei passaggi più complessi.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMedi\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eI medi sono naturali, chiari e musicali. Le voci e gli strumenti acustici risultano ben focalizzati, con una tessitura armonica equilibrata e piacevole.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAlti\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLa gamma alta è aperta e pulita, con buona estensione e una presentazione fluida, mai aggressiva. Il dettaglio resta ben integrato nel messaggio musicale.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDinamica\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLa dinamica è pronta e coerente, con una risposta stabile e ben controllata. Il matching del quartetto aiuta a mantenere uniformità e continuità timbrica tra le diverse posizioni circuitali.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLa scena sonora appare ampia, stabile e ben organizzata. La coerenza del quartetto favorisce una corretta separazione degli strumenti e una presentazione equilibrata tra i canali.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Uso in Amplificatori Hi-Fi Stereo\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eQuesto quartetto matched è particolarmente indicato per:\u003c\/p\u003e\n\u003cp class=\"p3\"\u003epreamplificatori valvolari multi-stadio\u003cbr\u003estadi linea\u003cbr\u003edriver stages\u003cbr\u003eamplificatori integrati\u003cbr\u003eDAC e buffer valvolari\u003cbr\u003eapparecchi hi-fi che utilizzano più 12AU7 \/ ECC82\u003cbr\u003erestauri di elettroniche vintage americane\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eLa selezione \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e lo rende adatto anche ad applicazioni sensibili, inclusi stadi phono compatibili e posizioni dove silenziosità e coerenza tra le valvole sono essenziali.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎸 Uso in Amplificatori Musicali\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eIn amplificatori per strumenti musicali e apparecchiature professionali compatibili, queste \u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7 \/ ECC82 Baldwin by Sylvania\u003c\/b\u003e\u003c\/span\u003e possono offrire:\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eottima stabilità operativa\u003cbr\u003erisposta armonica naturale\u003cbr\u003erumore contenuto\u003cbr\u003ebassa microfonicità\u003cbr\u003ecomportamento coerente tra le quattro valvole\u003cbr\u003ebuona intelligibilità del segnale\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eCaratteristiche che rendono il quartetto interessante sia in studio sia in applicazioni live, sempre nel rispetto della compatibilità tecnica dell’apparecchio.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎯 Nota per audiofili e tecnici\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eQuesto quartetto unisce elementi particolarmente apprezzati dagli appassionati:\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eproduzione \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Made in USA\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003emarchio \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBaldwin\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003estesso codice di fabbricazione \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e312 052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eproduzione \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e1960\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Quad\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBurning Test 48h – OK\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003eprestazioni \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMOLTO FORTI\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e su tutte le valvole\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eUna selezione di alto livello per chi desidera un quartetto realmente coerente, silenzioso e stabile, capace di offrire il fascino della produzione americana d’epoca con una verifica moderna, accurata e documentata.\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 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 Va = 250V, Vg = -8.5V\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMedia 100%:\u003c\/b\u003e\u003c\/span\u003e Gm = 2200 ; Ia = 10.5 mA\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eRisultato del Test:\u003c\/b\u003e\u003c\/span\u003e MOLTO FORTE\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eValvola #5\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cstrong\u003eSezione 1:\u003c\/strong\u003e Gm = \u003cmeta charset=\"utf-8\"\u003e2200 ; Ia = 9.8 mA\u003cbr\u003e\u003cstrong\u003eSezione 2:\u003c\/strong\u003e Gm = 2200 ; Ia = 9.4 mA\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eValvola #22\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cstrong\u003eSezione 1:\u003c\/strong\u003e Gm = 2100 ; Ia = 9.0 mA\u003cbr\u003e\u003cstrong\u003eSezione 2:\u003c\/strong\u003e Gm = 2300 ; Ia = 10.2 mA\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eValvola #23\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cstrong\u003eSezione 1:\u003c\/strong\u003e Gm = 2300 ; Ia = 10.2 mA\u003cbr\u003e\u003cstrong\u003eSezione 2:\u003c\/strong\u003e Gm = 2100 ; Ia = 8.8 mA\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eValvola #25\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cstrong\u003eSezione 1:\u003c\/strong\u003e Gm = \u003cmeta charset=\"utf-8\"\u003e2200 ; Ia = 9.6 mA\u003cbr\u003e\u003cstrong\u003eSezione 2:\u003c\/strong\u003e Gm = 2200 ; Ia = 9.2 mA\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTest Addizionali eseguiti\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eBurning Test:\u003c\/b\u003e 48h – OK\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMicrofonicità:\u003c\/b\u003e\u003c\/span\u003e Bassa. Testate e conformi per l’uso in hi-fi anche in stadi phono e in amplificatori per chitarra. Adatte anche in V1.\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBilanciamento:\u003c\/b\u003e\u003c\/span\u003e Le sezioni risultano coerenti e ben allineate, rendendo le valvole idonee anche all’impiego come phase inverter in applicazioni hi-fi e strumentali.\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eQualità dell’Emissione:\u003c\/b\u003e\u003c\/span\u003e Eccellente – emissione molto forte e stabile, senza fluttuazioni.\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCortocircuiti e GAS:\u003c\/b\u003e\u003c\/span\u003e Assenti.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCondizioni\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCondizioni:\u003c\/b\u003e NOS – New Old Stock – testate e funzionanti. Fornite nella nostra scatola personalizzata per una protezione ottimale.\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eFunzionalità:\u003c\/b\u003e\u003c\/span\u003e Perfettamente operative.\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCondizioni estetiche:\u003c\/b\u003e\u003c\/span\u003e Eccellenti – scritte ottimamente conservate, minimi segni del tempo. Vedere foto per i dettagli.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb\u003eCodice di Fabbricazione: \u003c\/b\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e312 052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e → 312 indica il fabbricante, ovvero \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Electric Products Inc., Emporium, Pa. - \u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e → 0 indica \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e1960\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e, 52 indica la \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e52ª settimana dell’anno\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e.\u003c\/span\u003e\u003c\/p\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":58008186585436,"sku":"03653T","price":80.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_9cb94df9-5c1c-40bf-81ff-e5073ffb506d.jpg?v=1781195292","url":"https:\/\/vacuumtubestreasures.com\/it-gb\/products\/12au7a-ecc82-nos-baldwin-by-sylvania-long-gray-plates-halo-getter-matched-quad-tubes-made-in-usa-60s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}