{"product_id":"12au7a-ecc82-nos-baldwin-by-sylvania-long-gray-plates-halo-getter-tested-tube-made-in-usa-60s","title":"12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube Made in USA '60s","description":"\u003ch3\u003e12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube Made in USA '60s\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Tested – Low Noise \u0026amp; Microphonics – Vintage American SYLVANIA Production\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDescription\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7 \/ ECC82 NOS Baldwin by Sylvania\u003c\/b\u003e\u003c\/span\u003e, \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA 1960\u003c\/b\u003e\u003c\/span\u003e production, represents an American selection of great interest to enthusiasts of quality vintage tubes.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eTubes branded \u003cspan class=\"s1\"\u003e\u003cb\u003eBaldwin\u003c\/b\u003e\u003c\/span\u003e were intended for high-level musical and professional applications, particularly premium electronic organs, where reliability, low noise, and operational longevity were fundamental requirements. Behind the Baldwin brand, in this case, we find the renowned production of \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Electric Products Inc.\u003c\/b\u003e\u003c\/span\u003e, easily recognizable by the characteristic construction 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.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis tube is particularly appreciated by audiophiles for its tonal balance, the naturalness of the midrange, and its ability to offer an engaging musical presentation without artificiality.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe tube is in \u003cspan class=\"s1\"\u003e\u003cb\u003eNOS – New Old Stock\u003c\/b\u003e\u003c\/span\u003e condition, tested and selected using the \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e, with an overall result of \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e, low noise, low microphonics, and \u003cspan class=\"s1\"\u003e\u003cb\u003e48h Burning Test passed\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFrom an aesthetic point of view, it is in excellent condition, with a well-preserved internal structure and normal signs of aging compatible with an authentically vintage tube.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003e\u003cb style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eTimbral Characteristics and Sound Description\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe early 1960s Sylvania Long Gray Plates are appreciated for their balanced, open, and natural sound reproduction, with a very recognizable American musicality.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eIn this matched pair selection, the consistency between the two tubes contributes to a stable, orderly, and very pleasant presentation, ideal for quality stereo systems.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe bass range is controlled, articulate, and well-supported. It offers a solid foundation without being intrusive, maintaining rhythm and clarity even in the most complex passages.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe mids are natural, clear, and musical. Vocals and acoustic instruments are well-focused, with a balanced and pleasant harmonic texture.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe high range is open and clean, with good extension and a smooth, never aggressive presentation. Detail remains well-integrated into the musical message.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe dynamics are prompt and consistent, with a stable and well-controlled response. The matching of the pair helps maintain tonal uniformity and continuity between the two channels.\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\"\u003eThe soundstage appears wide, stable, and well-organized. The consistency of the pair promotes correct instrument separation and a balanced presentation of the stereo image.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Stereo Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis tube is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003etube preamplifiers\u003c\/li\u003e\n\n\u003cli\u003eline stages\u003c\/li\u003e\n\n\u003cli\u003edriver stages\u003c\/li\u003e\n\n\u003cli\u003eintegrated amplifiers\u003c\/li\u003e\n\n\u003cli\u003eDACs and tube buffers\u003c\/li\u003e\n\n\u003cli\u003erestorations of vintage hi-fi electronics\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e selection also makes it suitable for the most sensitive positions in the circuit.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎸 Use in Musical Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn amplifiers for musical instruments and compatible professional equipment, this 12AU7 \/ ECC82 Baldwin by Sylvania can offer:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eexcellent operational stability\u003c\/li\u003e\n\n\u003cli\u003enatural harmonic response\u003c\/li\u003e\n\n\u003cli\u003econtained noise\u003c\/li\u003e\n\n\u003cli\u003elow microphonics\u003c\/li\u003e\n\n\u003cli\u003eexcellent signal intelligibility\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThese characteristics make it interesting for both studio and live applications.\u003c\/p\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=\"p1\"\u003eThis tube combines several elements particularly appreciated by enthusiasts:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cspan class=\"s1\"\u003eproduction \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003eSylvania Made in USA\u003c\/b\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan class=\"s1\"\u003ebrand \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003eBaldwin\u003c\/b\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan class=\"s1\"\u003eproduction \u003c\/span\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003e1960\u003c\/b\u003e\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eNOS – New Old Stock\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBurning Test 48h – OK\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG \u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003eperformance\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eA quality selection that offers the charm of the best vintage American production, with solid performance, high silence, and great versatility of use.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTest Results\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eTubes tested on\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\u003eTest Conditions:\u003c\/b\u003e\u003cspan class=\"s1\"\u003e Va = 250V, Vg = -8.5V\u003cbr\u003e\u003cb\u003eAverage 100%:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e Gm = 2200 ; Ia = 10.5 mA\u003cbr\u003e\u003cb\u003eTest Result:\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e VERY STRONG\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTube #19\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2160 ; Ia = 9.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2100 ; Ia = 8.2 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAdditional Tests Performed\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli class=\"p2\"\u003e\n\n\u003cb\u003eBurning Test:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e 48h – OK\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli class=\"p3\"\u003e\n\n\u003cb\u003eMicrophonics:\u003c\/b\u003e Low. Tested and compliant for hi-fi use, including phono stages and guitar amplifiers. Also suitable for V1.\u003c\/li\u003e\n\n\u003cli class=\"p3\"\u003e\n\n\u003cb\u003eBalance:\u003c\/b\u003e The sections are consistent and well-aligned, making the tubes suitable for use as phase inverters in hi-fi and instrumental applications.\u003c\/li\u003e\n\n\u003cli class=\"p3\"\u003e\n\n\u003cb\u003eEmission Quality:\u003c\/b\u003e Excellent – very strong and stable emission, without fluctuations.\u003c\/li\u003e\n\n\u003cli class=\"p2\"\u003e\n\n\u003cb\u003eShorts and GAS:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e Absent.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCondition\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli class=\"p3\"\u003e\n\n\u003cb\u003eCondition:\u003c\/b\u003e NOS – New Old Stock – tested and working. Supplied in our custom box for optimal protection.\u003c\/li\u003e\n\n\u003cli class=\"p3\"\u003e\n\n\u003cb\u003eFunctionality:\u003c\/b\u003e Perfectly operational.\u003c\/li\u003e\n\n\u003cli class=\"p3\"\u003e\n\n\u003cb\u003eCosmetic Condition:\u003c\/b\u003e Excellent – perfectly preserved lettering, minimal signs of aging. See photos for details.\u003c\/li\u003e\n\n\u003cli class=\"p2\"\u003e\n\n\u003cb\u003eManufacturing Code: \u003c\/b\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e312 052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e → 312 indicates the manufacturer, namely \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Electric Products Inc., Emporium, Pennsylvania\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e. \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e → 0 indicates \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e1960\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e, 52 indicates the \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e52nd week of the year\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s2\"\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":58078201381212,"sku":"03671L","price":185.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_8d365abe-beb3-45dd-aa97-32114897bcd1.jpg?v=1781518298","url":"https:\/\/vacuumtubestreasures.com\/en-hk\/products\/12au7a-ecc82-nos-baldwin-by-sylvania-long-gray-plates-halo-getter-tested-tube-made-in-usa-60s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}