{"product_id":"12au7a-ecc82-nos-baldwin-by-sylvania-matched-pair-long-gray-plates-halo-getter-tubes-usa-63","title":"12AU7A \/ ECC82 NOS Baldwin by Sylvania Matched Pair Long Gray Plates Halo Getter Tubes USA '63","description":"\u003cp class=\"p1\"\u003e\u003cb\u003e12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Matched Pair Tubes Made in USA ’63\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb\u003eAMPLITREX Matched Pair - Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7A \/ ECC82 NOS Baldwin by Sylvania\u003c\/b\u003e\u003c\/span\u003e, offered as a \u003cspan class=\"s1\"\u003e\u003cb\u003eMatched Pair\u003c\/b\u003e\u003c\/span\u003e, with \u003cspan class=\"s1\"\u003e\u003cb\u003elong gray plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003ehalo getter\u003c\/b\u003e\u003c\/span\u003e, manufactured in the USA in \u003cspan class=\"s1\"\u003e\u003cb\u003e1963\u003c\/b\u003e\u003c\/span\u003e, represents one of the mature and reliable expressions of American Sylvania production from the early '60s.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Baldwin selection identifies a supply intended for quality professional and musical applications, where stability, operational continuity, and consistent sound output were fundamental aspects. The \u003cspan class=\"s1\"\u003e\u003cb\u003ematched pair\u003c\/b\u003e\u003c\/span\u003e configuration ensures operational consistency and uniform sound output between channels.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe tubes are \u003cspan class=\"s1\"\u003e\u003cb\u003eNOS\u003c\/b\u003e\u003c\/span\u003e, carefully selected and matched in our laboratory, with particular attention to low noise and controlled microphonics, important characteristics for high-level hi-fi applications and sensitive amplifiers.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSonic Characteristics\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBass:\u003c\/b\u003e Natural and well-structured, with elegant control and a smooth response. The low register is present without excess, contributing to an overall very musical balance.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMids:\u003c\/b\u003e Warm, full, and rich in harmonics. Voices and acoustic instruments emerge naturally and realistically, in the classic American Sylvania style of the early '60s.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHighs:\u003c\/b\u003e Sweet, open, and well-finished. The extreme high end is airy but never aggressive, with a fine grain that promotes prolonged listening.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDynamics:\u003c\/b\u003e Smooth and well-proportioned. Microdynamics are clear and natural, without compression or stiffness.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eSoundstage:\u003c\/b\u003e Wide and stable, with good depth and correct instrument separation. The sound image is credible and coherent between channels.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eIdeal for \u003cspan class=\"s1\"\u003e\u003cb\u003epreamplifiers, line stages, and drivers\u003c\/b\u003e\u003c\/span\u003e, in both vintage equipment and modern designs that value the musicality, balance, and timbral refinement of American NOS 12AU7s.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎸 Use in Musical Applications\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eAlso appreciated in musical and studio settings, where they offer balanced, quiet, and reliable performance, with a warm, controlled, and well-defined character.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎯 Note for audiophiles and technicians\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p4\"\u003eThis pair represents:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ehistorical \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania USA production from 1963\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003ea quality \u003cspan class=\"s1\"\u003e\u003cb\u003eBaldwin\u003c\/b\u003e\u003c\/span\u003e selection\u003c\/li\u003e\n\u003cli\u003ea carefully matched pair\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"s1\"\u003ea construction with \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003elong gray plates\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e and \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003ehalo getter\u003c\/b\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eperformance oriented towards consistency, musicality, and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eA pair designed for those who want to bring the Sylvania character of the early '60s into their system: natural, balanced, quiet, and deeply musical, according to the Vacuum Tubes Treasures philosophy.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTube tested on AMPLITREX AT-1000 Tube Tester:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -8.5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube #6:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2370 ; Ia = 11.2 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2000 ; Ia = 9.2 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube #2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2400 ; Ia = 10.8 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2400 ; Ia = 11.8 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and suitable for hi-fi use even in phono stages and guitar amplifiers. Also suitable for V1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and fully functional. Supplied in our custom box for optimal protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Perfectly operational.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosmetic Condition:\u003c\/strong\u003e Very Good – Legible lettering with slight signs of age, no evident defects. See photos for details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Code: \u003c\/strong\u003e312 326 → 312 indicates the manufacturer, Sylvania Electric Products Inc., Emporium, Pa. - \u003cmeta charset=\"utf-8\"\u003e326 → 3 ( on three digits ) → 1963 - 26 → 26th week of the year\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\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":57616732127580,"sku":"03587R","price":241.0,"currency_code":"RON","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_ca6de03d-71f2-412a-8c1b-1db5b5b21fb1.jpg?v=1778501977","url":"https:\/\/vacuumtubestreasures.com\/en-ro\/products\/12au7a-ecc82-nos-baldwin-by-sylvania-matched-pair-long-gray-plates-halo-getter-tubes-usa-63","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}