{"product_id":"5u4gb-5as4a-nos-nib-toshiba-international-black-plates-matched-pair-tubes-top-side-dual-disc-getter-rectifiers-made-in-japan","title":"5U4GB 5AS4A NOS NIB International by TOSHIBA Black Plates Tube Top Side Dual Disc Getter Rectifier Made in JAPAN","description":"\u003cp\u003e\u003cstrong\u003e5U4GB 5AS4A NOS NIB International by \u003cmeta charset=\"utf-8\"\u003eTOSHIBA Black Plates Tube Top Side Dual Disc Getter Rectifier Made in JAPAN\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eNota: Il Prezzo si riferisce a una valvola selezionata\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eDescrizione:\u003c\/h3\u003e\n\u003cp data-start=\"410\" data-end=\"944\"\u003eLa \u003cstrong data-start=\"456\" data-end=\"473\"\u003e5U4GB \/ 5AS4A\u003c\/strong\u003e, prodotta in Giappone da \u003cstrong data-start=\"499\" data-end=\"510\"\u003eToshiba\u003c\/strong\u003e e distribuita con marchio \u003cem data-start=\"537\" data-end=\"552\"\u003eInternational\u003c\/em\u003e, è proposta in condizioni \u003cstrong data-start=\"577\" data-end=\"616\"\u003eNOS NIB (New Old Stock, New in Box)\u003c\/strong\u003e.\u003cbr data-start=\"617\" data-end=\"620\"\u003eQuesta valvola presenta \u003cstrong data-start=\"646\" data-end=\"662\"\u003eblack plates\u003c\/strong\u003e e un particolare sistema di \u003cstrong data-start=\"691\" data-end=\"734\"\u003edual disc getter in posizione superiore\u003c\/strong\u003e, caratteristica tipica delle produzioni giapponesi di alta qualità dell’epoca. Rappresenta una scelta di grande affidabilità e coerenza per applicazioni audio di pregio.\u003c\/p\u003e\n\u003ch3 data-start=\"946\" data-end=\"993\"\u003eCaratteristiche timbriche e prestazioni\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"996\" data-end=\"1063\"\u003e\n\u003cstrong data-start=\"996\" data-end=\"1005\"\u003eBassi\u003c\/strong\u003e: tesi e compatti, con ottima articolazione e controllo.\u003c\/li\u003e\n\u003cli data-start=\"1066\" data-end=\"1145\"\u003e\n\u003cstrong data-start=\"1066\" data-end=\"1074\"\u003eMedi\u003c\/strong\u003e: chiari e trasparenti, con voci e strumenti restituiti con realismo.\u003c\/li\u003e\n\u003cli data-start=\"1148\" data-end=\"1218\"\u003e\n\u003cstrong data-start=\"1148\" data-end=\"1156\"\u003eAlti\u003c\/strong\u003e: brillanti e raffinati, mai aggressivi, con dettaglio fine.\u003c\/li\u003e\n\u003cli data-start=\"1221\" data-end=\"1305\"\u003e\n\u003cstrong data-start=\"1221\" data-end=\"1233\"\u003eDinamica\u003c\/strong\u003e: stabile e proporzionata, con erogazione costante anche sotto carico.\u003c\/li\u003e\n\u003cli data-start=\"1308\" data-end=\"1384\"\u003e\n\u003cstrong data-start=\"1308\" data-end=\"1322\"\u003eSoundstage\u003c\/strong\u003e: ordinato, stabile e preciso, con immagine sonora coerente.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1386\" data-end=\"1677\"\u003e🎧 Uso in Amplificatori Hi-Fi Stereo\u003c\/h3\u003e\n\u003cp data-start=\"1386\" data-end=\"1677\"\u003eIdeale come rettificatrice principale in amplificatori hi-fi di riferimento (McIntosh, Dynaco, Audio Research, Conrad Johnson e simili), offre alimentazione silenziosa e lineare, con eccellente coerenza timbrica e grande affidabilità nel tempo.\u003c\/p\u003e\n\u003ch3 data-start=\"1679\" data-end=\"1891\"\u003e🎸 Uso in Amplificatori Musicali\u003c\/h3\u003e\n\u003cp data-start=\"1679\" data-end=\"1891\"\u003eIn amplificatori per chitarra valvolari, la 5U4GB Toshiba regala sustain naturale, risposta pronta e una timbrica armonica calda, perfetta per blues, jazz e rock classico.\u003c\/p\u003e\n\u003ch3 data-start=\"1893\" data-end=\"2222\"\u003e🎯 Nota per audiofili e tecnici\u003c\/h3\u003e\n\u003cp data-start=\"1893\" data-end=\"2222\"\u003eQuesta \u003cstrong data-start=\"1938\" data-end=\"2011\"\u003e5U4GB \/ 5AS4A Toshiba Black Plates Dual Disc Getter\u003c\/strong\u003e, in condizioni \u003cstrong data-start=\"2027\" data-end=\"2038\"\u003eNOS NIB\u003c\/strong\u003e, rappresenta una soluzione rara e di pregio per chi desidera una rettificazione stabile, longeva e dal carattere sonoro raffinato, sia in hi-fi che in applicazioni musicali vintage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eRisultati dei Test\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eValvole Testate\u003c\/strong\u003e su\u003cstrong\u003e Funke W19 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003c\/strong\u003e Va = 100V, Vf = 5V\u003cstrong\u003e\u003cbr\u003eBuone da:\u003c\/strong\u003e Ia = 78 mA\u003cstrong\u003e\u003cbr\u003eMedia 100%:\u003c\/strong\u003e Ia = 120 mA\u003cstrong\u003e\u003cbr\u003eRISULTATO DEL TEST: \u003c\/strong\u003eMOLTO 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: Ia = 132 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2\u003c\/strong\u003e: Ia = 133 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: Ia = 135 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSezione 2\u003c\/strong\u003e: Ia = 130 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\n\u003cstrong\u003eFunzionamento:\u003c\/strong\u003e Valvola stabile, silenziosa in esercizio e idonea a un’alimentazione regolare e controllata. Test eseguito con tester Funke W19.\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\u003e\n\u003cstrong\u003eCondizioni:\u003c\/strong\u003e NOS - NIB - New Old Stock, New In Box - Testata e funzionante - 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 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\u003enon decifrabile – produzione TOSHIBA JAPAN, identificabile per caratteristiche costruttive. Anni ’70\u003cmeta charset=\"utf-8\"\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":"INTERNATIONAL","offers":[{"title":"Default Title","offer_id":55591941308764,"sku":"03171","price":89.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/14_e2f2b8d3-9656-4965-8c99-99c3349c8355.jpg?v=1769277477","url":"https:\/\/vacuumtubestreasures.com\/it-hr\/products\/5u4gb-5as4a-nos-nib-toshiba-international-black-plates-matched-pair-tubes-top-side-dual-disc-getter-rectifiers-made-in-japan","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}