{"product_id":"5814a-12au7wa-e82cc-ge-five-stars-triple-mica-gray-plates-horse-shoe-getter-made-in-usa","title":"5814A \/ 12AU7WA \/ E82CC GE NOS NIB Five Stars Triple Mica Gray Plates Horse Shoe Getter Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e5814A \/ 12AU7WA \/ E82CC GE NOS NIB Five Stars Triple Mica Gray Plates Horse Shoe Getter Made in USA '57\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUltra Low Noise \u0026amp; Microphonics –\u003cspan\u003e VERY STRONG - Vintage General Electric Production\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTube tested on\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAMPLITREX AT-1000\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eTube 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:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2200 ; Ia = 11.6 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2210 ; Ia = 12.0 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 Very Low. Tested and suitable 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. Silent operation in hi-fi and musical amplifiers in their intended positions.\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Excellent - The sections are consistent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrumental 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 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\u003eValuable \u003cstrong\u003e5814A \/ 12AU7WA \/ E82CC GE Five Stars NOS NIB\u003c\/strong\u003e, authentic professional \u003cstrong\u003eGeneral Electric Made in USA production from 1957\u003c\/strong\u003e, featuring the sought-after \u003cstrong\u003eTriple Mica, Gray Plates, and Horse Shoe Getter\u003c\/strong\u003e construction. The \u003cstrong\u003eGE Five Stars\u003c\/strong\u003e series represents one of the most appreciated high-reliability lines of vintage American production, developed for professional applications where stability, long life, and consistent performance were fundamental requirements.\u003c\/p\u003e\n\u003cp\u003eThe manufacturing code \u003cstrong\u003e57-26 \/ 188\u003c\/strong\u003e identifies \u003cstrong\u003eGeneral Electric Company, Syracuse, New York\u003c\/strong\u003e production, and precisely places this specimen in the \u003cstrong\u003e26th week of 1957\u003c\/strong\u003e. The combination of \u003cstrong\u003eFive Stars + Triple Mica + Horse Shoe Getter\u003c\/strong\u003e, together with \u003cstrong\u003eNOS NIB\u003c\/strong\u003e conditions, makes this tube particularly interesting both technically and for collectors.\u003c\/p\u003e\n\u003cp\u003eThe tube has been carefully tested in our laboratory using the \u003cstrong\u003eAmplitrex AT-1000 Tube Tester\u003c\/strong\u003e, achieving a \u003cstrong\u003eVERY STRONG\u003c\/strong\u003e classification. The two sections measured respectively \u003cstrong\u003eGm 2200 \/ Ia 11.6 mA\u003c\/strong\u003e and \u003cstrong\u003eGm 2210 \/ Ia 12.0 mA\u003c\/strong\u003e, showing practically perfect transconductance matching and excellent anode current alignment. The emission is very strong, stable, and free of fluctuations.\u003c\/p\u003e\n\u003cp\u003eIt also passed a \u003cstrong\u003e48-hour Burn-in \/ Stability Test\u003c\/strong\u003e and has been selected for \u003cstrong\u003eUltra Low Noise \u0026amp; Microphonics\u003c\/strong\u003e, with particularly low and well-controlled noise. It is therefore suitable even for the \u003cstrong\u003emost sensitive audio stages\u003c\/strong\u003e, including preamplifiers, V1, and compatible phono stages. The excellent balance between the two triodes also makes it particularly suitable for use as a \u003cstrong\u003ephase inverter\u003c\/strong\u003e in compatible hi-fi and instrumental applications. No shorts, gas, or anomalies were detected.\u003c\/p\u003e\n\u003cp\u003eSonically, vintage \u003cstrong\u003eGE Five Stars 5814A\u003c\/strong\u003e are appreciated for a balanced, authoritative, and refined presentation, with natural and well-defined mids, solid and controlled bass, and clean and open high frequencies. The combination of professional construction, high quietness, and perfect section consistency makes this specimen particularly interesting for high-level audio electronics.\u003c\/p\u003e\n\u003cp\u003eIdeal for \u003cstrong\u003ehi-fi preamplifiers, compatible phono stages, integrated amplifiers, line stages, DACs and tube buffers, phase inverters, professional equipment, and guitar amplifiers\u003c\/strong\u003e designed for \u003cstrong\u003e5814A \/ 12AU7WA \/ E82CC\u003c\/strong\u003e and compatible equivalents.\u003c\/p\u003e\n\u003cp\u003eThe tube is \u003cstrong\u003eNOS NIB – New Old Stock, New In Box\u003c\/strong\u003e, carefully tested and perfectly functional, supplied in its \u003cstrong\u003eoriginal box\u003c\/strong\u003e. Aesthetic conditions are \u003cstrong\u003egood\u003c\/strong\u003e, with partially eroded but still legible screen printing and a well-preserved tube body.\u003c\/p\u003e\n\u003cp\u003eA valuable \u003cstrong\u003eGE Five Stars 5814A \/ 12AU7WA \/ E82CC Triple Mica Gray Plates Horse Shoe Getter from 1957\u003c\/strong\u003e, truly tested and selected by \u003cstrong\u003eVacuum Tubes Treasures\u003c\/strong\u003e, with \u003cstrong\u003eVERY STRONG, Ultra Low Noise \u0026amp; Microphonics and exceptionally balanced sections\u003c\/strong\u003e: a high-level NOS NIB specimen for those seeking one of the most interesting professional General Electric productions of the 1950s.\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 - NIB - New Old Stock, New In Box - Tested and functional - Supplied in Original Box.\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\u003eAesthetic condition:\u003c\/strong\u003e\u003cspan\u003e Good – Markings partially eroded, but still legible. Tube body in good condition. 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 57-26 188 → RMA\/EIA Open Date Code → manufactured 26th week of 1957 - 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 durability\" 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":59052296175964,"sku":"03793R","price":90.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/12_6b3806dc-b128-4802-972d-e80b17e78e7b.jpg?v=1788875574","url":"https:\/\/vacuumtubestreasures.com\/en-ca\/products\/5814a-12au7wa-e82cc-ge-five-stars-triple-mica-gray-plates-horse-shoe-getter-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}