{"product_id":"5963-ecc82-nos-ge-amplitrex-tested-long-gray-plates-horse-shoe-getter-usa","title":"5963 \/ ECC82 NOS GE AMPLITREX Tested Long Gray Plates Horse Shoe Getter USA","description":"\u003ch3\u003e\n\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003e5963 \/ 12AU7 \/ ECC82 NOS Stromberg Carlson by GE Long Gray Plates Horse Shoe Getter Made In USA '1959\u003c\/strong\u003e\u003cbr\u003e\n\n\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAMPLITREX Tested – Low Noise \u0026amp; Microphonics – VERY STRONG – Vintage American GE Production\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTube tested on an \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e\u003cspan\u003e Va = 250V ; Vg = -8.5V\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003e100% Average:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube #10:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2900 ; Ia = 16.6 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2780 ; Ia = 13.8 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional tests performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBurn-in \/ Stability Test:\u003c\/strong\u003e 48h – OK\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and compliant for use in hi-fi equipment and guitar amplifiers, even in the most sensitive audio stages.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eNoise: \u003c\/strong\u003eLow and well-controlled. Quiet operation in hi-fi settings and in music amplifiers in the intended positions.\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are not perfectly aligned. The tube is suitable for hi-fi use in non-critical stages (input or driver) and in guitar amplifiers. Not recommended as a phase inverter or in applications requiring strict balance between sections.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cspan\u003eImportant \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e5963 NOS Stromberg-Carlson produced by General Electric\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, made in the United States in the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e26th week of 1959\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The construction with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLong Gray Plates and the characteristic Horse Shoe Getter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e belongs to the American GE production of the late 50s and makes this tube particularly interesting for its build quality, performance, and historical charm.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe code \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e59-26 188\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e confirms the manufacturing date and General Electric origin: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e59-26\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e indicates the 26th week of 1959, while \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e188\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is the EIA code assigned to General Electric. The Stromberg-Carlson branding identifies a production intended for the historic US electronics manufacturer; the EIA code and the internal structure clearly document its GE manufacture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTested with an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAmplitrex AT-1000\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, the tube recorded particularly high transconductance values: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2900 and 2780 µmhos\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, significantly higher than the nominal reference of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2200 µmhos\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The anode currents of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e16.6 and 13.8 mA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e also confirm an exceptionally vigorous emission, with both sections well above the nominal value of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e10.5 mA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe two sections are very close in transconductance, while showing a more evident difference in anode current. The tube therefore offers a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enotable emission reserve\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, but should not be considered strictly balanced: it is particularly suitable for non-critical input stages, drivers, buffers, preamplifiers, and musical instrument amplifiers, while it is not recommended as a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ephase inverter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e or in applications requiring absolute symmetry between the sections.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e48-hour burn-in\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e verified parameter stability without fluctuations. The tube exhibits \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow microphonics, low noise, absence of gas, and no shorts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, characteristics that allow its use even in the most sensitive audio stages of compatible equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn terms of sound, this GE offers a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eclean, dynamic, and authoritative\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e reproduction, with a natural and well-focused midrange, solid and controlled low frequencies, and defined highs without being harsh. The particularly high emission contributes to a responsive, energetic, and well-articulated sound, both in hi-fi and guitar amplifiers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA high-level proposal for those looking for an authentic \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1959 American NOS 5963\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with Long Gray Plates, Horse Shoe Getter, low microphonics, and electrical values well above nominal references: a Stromberg-Carlson produced by GE, carefully tested and ready for use.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCosmetic Condition:\u003c\/strong\u003e\u003cspan\u003e Excellent – Labels perfectly preserved, minimal signs of aging. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e\u003cspan\u003e 59-26 188 → RMA\/EIA Open Date Code → manufactured in the 26th week of 1959 - 188 → General Electric Company, Syracuse 1, N. Y.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability, and lifespan\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":59304802648412,"sku":"03852L","price":34.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/9_f64b24c3-9751-43af-99e2-2ee55e223a7f.jpg?v=1790616593","url":"https:\/\/vacuumtubestreasures.com\/en-sk\/products\/5963-ecc82-nos-ge-amplitrex-tested-long-gray-plates-horse-shoe-getter-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}