{"product_id":"5u4gb-5as4a-nos-nib-toshiba-international-black-plates-matched-pair-tubes-top-side-halo-getter-rectifiers-made-in-japan","title":"5U4GB 5AS4A International by MATSUSHITA NOS NIB Black Plates Tube Top Side Halo Getter Rectifier Made in JAPAN","description":"\u003cp\u003e\u003cstrong\u003e5U4GB 5AS4A NOS NIB International by MATSUSHITA Black Plates Tube Top Side Halo 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\u003e\u003cstrong\u003eDescrizione:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"384\" data-end=\"964\"\u003eLa\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"430\" data-end=\"447\"\u003e5U4GB \/ 5AS4A\u003c\/strong\u003e, prodotta in Giappone da\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"473\" data-end=\"487\"\u003eMatsushita\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ee distribuita con marchio\u003cspan\u003e \u003c\/span\u003e\u003cem data-start=\"514\" data-end=\"543\"\u003eInternational\u003c\/em\u003e, è proposta in condizioni \u003cstrong data-start=\"568\" data-end=\"607\"\u003eNOS NIB (New Old Stock, New in Box)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econ\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"615\" data-end=\"631\"\u003eblack plates\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ee\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"634\" data-end=\"658\"\u003etop side halo getter.\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eQuesta valvola testimonia la qualità e l’affidabilità della scuola costruttiva giapponese tra la fine degli anni ’60 e i primi ’70.\u003c\/p\u003e\n\u003ch3 data-start=\"966\" data-end=\"1013\"\u003eCaratteristiche timbriche e prestazioni\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1016\" data-end=\"1090\"\u003e\n\u003cstrong data-start=\"1016\" data-end=\"1025\"\u003eBassi\u003c\/strong\u003e: tesi e ben definiti, con ottimo controllo del registro grave.\u003c\/li\u003e\n\u003cli data-start=\"1093\" data-end=\"1186\"\u003e\n\u003cstrong data-start=\"1093\" data-end=\"1101\"\u003eMedi\u003c\/strong\u003e: naturali e trasparenti, con voci e strumenti restituiti con chiarezza e realismo.\u003c\/li\u003e\n\u003cli data-start=\"1189\" data-end=\"1256\"\u003e\n\u003cstrong data-start=\"1189\" data-end=\"1197\"\u003eAlti\u003c\/strong\u003e: puliti e brillanti, mai aspri, con dettaglio raffinato.\u003c\/li\u003e\n\u003cli data-start=\"1259\" data-end=\"1344\"\u003e\n\u003cstrong data-start=\"1259\" data-end=\"1271\"\u003eDinamica\u003c\/strong\u003e: proporzionata e stabile, con erogazione fluida e sicura sotto carico.\u003c\/li\u003e\n\u003cli data-start=\"1347\" data-end=\"1424\"\u003e\n\u003cstrong data-start=\"1347\" data-end=\"1361\"\u003eSoundstage\u003c\/strong\u003e: ordinato e coerente, con immagine sonora stabile e precisa.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"1426\" data-end=\"1716\"\u003e🎧 Uso in Amplificatori Hi-Fi Stereo\u003c\/h3\u003e\n\u003cp data-start=\"1426\" data-end=\"1716\"\u003ePerfetta per amplificatori di riferimento che utilizza la 5U4GB \/ 5AS4A come rettificatrice (McIntosh, Dynaco, Audio Research e simili), queste Matsushita offrono alimentazione lineare, silenziosa e longeva, ideale per impianti di fascia alta.\u003c\/p\u003e\n\u003ch3 data-start=\"1718\" data-end=\"1932\"\u003e🎸 Uso in Amplificatori Musicali\u003c\/h3\u003e\n\u003cp data-start=\"1718\" data-end=\"1932\"\u003eIn ambito musicale, garantisce una risposta pronta e armonicamente ricca, con sustain naturale e headroom stabile, valorizzando tanto i suoni puliti quanto le saturazioni.\u003c\/p\u003e\n\u003ch3 data-start=\"1934\" data-end=\"2266\"\u003e🎯 Nota per audiofili e tecnici\u003c\/h3\u003e\n\u003cp data-start=\"1934\" data-end=\"2266\"\u003eQuesta\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"1979\" data-end=\"2038\"\u003e5U4GB \/ 5AS4A Matsushita Black Plates\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eè una valvola di grande interesse per chi desidera una rettificatrice solida e silenziosa. Le valvole giapponesi NOS NIB con marchio International, sono ideali sia come ricambio di pregio che come riserva per collezionisti e appassionati.\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 = 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\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 = 125 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\u003e315 - non decifrabile – produzione MATSUSHITA JAPAN, identificabile per caratteristiche costruttive. Anni ’70\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":"INTERNATIONAL","offers":[{"title":"Default Title","offer_id":55591247905116,"sku":"03169","price":79.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/14_0228b662-6645-4c6c-817a-79cb0c232835.jpg?v=1769278942","url":"https:\/\/vacuumtubestreasures.com\/it-hr\/products\/5u4gb-5as4a-nos-nib-toshiba-international-black-plates-matched-pair-tubes-top-side-halo-getter-rectifiers-made-in-japan","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}