{"product_id":"12ax7-ecc83-nos-baldwin-by-sylvania-long-gray-plates-large-halo-getter-matched-tubes-made-in-usa-50","title":"12AX7 ECC83 NOS Baldwin by Sylvania – Long Gray Plates Large Halo Getter Matched Quad Tubes USA 1949","description":"\u003cp\u003e\u003cstrong\u003e12AX7 ( ECC83 ) NOS Baldwin by SYLVANIA Long Gray Plates Large Halo Getter Matched Tubes MADE IN USA '49\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"461\" data-end=\"928\"\u003eThe \u003cstrong data-start=\"464\" data-end=\"505\"\u003eNOS Baldwin by Sylvania 12AX7 (ECC83) tubes\u003c\/strong\u003e , with \u003cstrong data-start=\"511\" data-end=\"551\"\u003eLong Gray Plates and Large Halo Getter\u003c\/strong\u003e , produced in the \u003cstrong data-start=\"568\" data-end=\"592\"\u003eUSA in 1949\u003c\/strong\u003e , are tubes \u003cstrong data-start=\"607\" data-end=\"681\"\u003eselected and made by Sylvania specifically for Baldwin Organs\u003c\/strong\u003e . These tubes offer a \u003cstrong data-start=\"719\" data-end=\"766\"\u003etransparent, musical and harmonically rich\u003c\/strong\u003e tone, with a \u003cstrong data-start=\"781\" data-end=\"806\"\u003edynamic and balanced\u003c\/strong\u003e sound, making them ideal for both \u003cstrong data-start=\"834\" data-end=\"876\"\u003ehigh-end hi-fi preamplifiers\u003c\/strong\u003e and \u003cstrong data-start=\"885\" data-end=\"925\"\u003emusical instrument amplifiers\u003c\/strong\u003e .\u003c\/p\u003e\n\u003cul data-start=\"930\" data-end=\"1822\"\u003e\n\u003cli data-start=\"930\" data-end=\"1092\"\u003e\u003cstrong data-start=\"932\" data-end=\"941\"\u003eBass\u003c\/strong\u003e : \u003cstrong data-start=\"943\" data-end=\"979\"\u003eTense, defined and well controlled\u003c\/strong\u003e , with a \u003cstrong data-start=\"1001\" data-end=\"1035\"\u003edeep but always balanced\u003c\/strong\u003e low range, ensuring \u003cstrong data-start=\"1048\" data-end=\"1089\"\u003eprecision and impact without bloating\u003c\/strong\u003e .\u003c\/li\u003e\n\u003cli data-start=\"1093\" data-end=\"1291\"\u003e\u003cstrong data-start=\"1095\" data-end=\"1103\"\u003eMids\u003c\/strong\u003e : \u003cstrong data-start=\"1105\" data-end=\"1148\"\u003eFluid, detailed and slightly warm\u003c\/strong\u003e , with a \u003cstrong data-start=\"1170\" data-end=\"1200\"\u003enatural and three-dimensional\u003c\/strong\u003e vocal rendition. Instruments emerge with \u003cstrong data-start=\"1229\" data-end=\"1288\"\u003eexcellent separation and refined harmonic detail\u003c\/strong\u003e .\u003c\/li\u003e\n\u003cli data-start=\"1292\" data-end=\"1471\"\u003e\u003cstrong data-start=\"1294\" data-end=\"1302\"\u003eHighs\u003c\/strong\u003e : \u003cstrong data-start=\"1304\" data-end=\"1335\"\u003eAiry, silky and well extended\u003c\/strong\u003e , with a \u003cstrong data-start=\"1350\" data-end=\"1380\"\u003eclear and unharsh\u003c\/strong\u003e performance. The level of detail is \u003cstrong data-start=\"1408\" data-end=\"1431\"\u003emusical and natural\u003c\/strong\u003e , avoiding any listening fatigue.\u003c\/li\u003e\n\u003cli data-start=\"1472\" data-end=\"1661\"\u003e\u003cstrong data-start=\"1474\" data-end=\"1486\"\u003eDynamics\u003c\/strong\u003e : \u003cstrong data-start=\"1488\" data-end=\"1509\"\u003ePrompt and responsive\u003c\/strong\u003e , with \u003cstrong data-start=\"1543\" data-end=\"1563\"\u003eprecise and fluid\u003c\/strong\u003e transient management, capable of delivering \u003cstrong data-start=\"1586\" data-end=\"1635\"\u003esubtle sonic nuances and intricate details\u003c\/strong\u003e with great naturalness.\u003c\/li\u003e\n\u003cli data-start=\"1662\" data-end=\"1822\"\u003e\u003cstrong data-start=\"1664\" data-end=\"1678\"\u003eSoundstage\u003c\/strong\u003e : \u003cstrong data-start=\"1680\" data-end=\"1702\"\u003eWide and realistic\u003c\/strong\u003e , with excellent instrument separation and spatial rendering that gives \u003cstrong data-start=\"1776\" data-end=\"1819\"\u003edepth and airiness to the soundstage\u003c\/strong\u003e .\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1824\" data-end=\"2288\"\u003eThanks to their \u003cstrong data-start=\"1841\" data-end=\"1923\"\u003erobust construction and careful selection by Sylvania for Baldwin\u003c\/strong\u003e , the \u003cstrong data-start=\"1928\" data-end=\"1963\"\u003e12AX7 Sylvania Long Gray Plates\u003c\/strong\u003e 1940s offer \u003cstrong data-start=\"1987\" data-end=\"2050\"\u003elow microphonics, operational stability and a long lifespan\u003c\/strong\u003e , making them perfect for \u003cstrong data-start=\"2076\" data-end=\"2110\"\u003eaudiophiles and demanding musicians\u003c\/strong\u003e . Their \u003cstrong data-start=\"2120\" data-end=\"2178\"\u003emusical, detailed and harmonically balanced sound\u003c\/strong\u003e makes them an excellent choice for those who want \u003cstrong data-start=\"2231\" data-end=\"2285\"\u003eprecise, smooth and engaging sound reproduction\u003c\/strong\u003e .\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003eVa = 250V ; Vg = -2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 1600 ; Ia = 1.2 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1600 ; Ia = 1.1 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1500 ; Ia = 1.1 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1600 ; Ia = 1.1 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1500 ; Ia = 1.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eValve 3:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1500 ; Ia =\u0026nbsp;0.9 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1300 ; Ia =\u0026nbsp;0.8 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 4:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1500 ; Ia =\u0026nbsp;0.9 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1500 ; Ia =\u0026nbsp;1.0 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e\u003cmeta charset=\"utf-8\"\u003e Standard. Tested and approved for use in hi-fi and guitar amplifiers. Not recommended for the V1 position in high sensitivity guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\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\u003cstrong\u003eCondition:\u003c\/strong\u003e New Old Stock - Tested and working - In our custom box.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e \u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAesthetic Condition:\u003c\/strong\u003e Excellent – Inscriptions in excellent condition, minimal signs of wear. See photos.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 312 913 - 13th week of 1949\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":54067629195612,"sku":"02795","price":179.8,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_2ab212f6-b2d7-41ba-b566-5e2703881a12.jpg?v=1740761077","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12ax7-ecc83-nos-baldwin-by-sylvania-long-gray-plates-large-halo-getter-matched-tubes-made-in-usa-50","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}