{"product_id":"5963-ecc82-nos-ge-amplitrex-matched-pair-long-gray-plate-horse-shoe-getter-usa","title":"5963 \/ ECC82 NOS GE AMPLITREX Matched Pair Long Gray Plate 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 Matched – 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 \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\u003eAverage 100%:\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 #12:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2800 ; Ia = 14.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2600 ; Ia = 12.6 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube #7:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2800 ; Ia = 13.6 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2700 ; Ia = 12.8 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 environments and in musical amplifiers in the intended positions.\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMatching:\u003c\/strong\u003e Very good. The sections are consistent and well-aligned, making the tube also suitable for use as a phase inverter in hi-fi and instrument applications.\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 None.\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\u003eAn important \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eNOS pair of 5963 Stromberg-Carlson tubes manufactured 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 late 1950s American GE production, making this pair 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 production intended for the historic US electronics manufacturer; the EIA code and internal structure clearly document the GE manufacture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe two tubes form an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAmplitrex Matched\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e pair with very homogeneous transconductance values, between \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2600 and 2800 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. Anodic currents, between \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12.6 and 14.2 mA\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, also confirm particularly vigorous and regular emission.\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 the stability of the parameters without fluctuations. The pair features \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow microphonics, low noise, absence of gas, and no shorts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The very good balance and consistency of the sections make it suitable for hi-fi preamplifiers and drivers, headphone amplifiers, buffers, line stages, and musical instrument amplifiers, as well as for use as a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ephase inverter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e in 5963-compatible equipment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn terms of sound, these GEs offer a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eclean, balanced, and authoritative\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e reproduction, with natural mid-range, solid and controlled low frequencies, and defined highs without being harsh. In hi-fi systems, they promote transparency, image stability, and channel consistency; in guitar amplifiers, they ensure a responsive performance, good control, and excellent articulation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA high-level offering for those seeking an \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAmerican NOS pair belonging to the same lot\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with Long Gray Plates, Horse Shoe Getter, low microphonics, emission clearly superior to nominal values, and a particularly homogeneous electrical selection: two authentic Stromberg-Carlsons produced by GE in 1959, individually tested and ready for use.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\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 functional - 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 – Markings well preserved, minimal signs of age. 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":59303600849244,"sku":"03849L","price":69.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/10_70ea30f5-61f4-482b-bf0f-c66e2e06718d.jpg?v=1790607484","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/5963-ecc82-nos-ge-amplitrex-matched-pair-long-gray-plate-horse-shoe-getter-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}