{"product_id":"12ax7-ecc83-ge-nos-short-gray-plates-halo-getter-tested-tube-made-in-usa","title":"12AX7 \/ ECC83 GE NOS Short Gray Plates Halo Getter Tested Tube Made in USA","description":"\u003cp class=\"p1\"\u003e\u003cb\u003e12AX7 \/ ECC83 GE NOS Short Gray Plates Halo Getter Made in USA\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Tested – Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 \/ ECC83 GE – General Electric NOS\u003c\/b\u003e\u003c\/span\u003e, \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA\u003c\/b\u003e\u003c\/span\u003e production, is a single tube selected and tested for audio applications where construction quality, stability, and low noise are fundamental elements.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe 12AX7 \/ ECC83 is one of the most widely used and sought-after preamplifier tubes in the hi-fi and music world. In this \u003cspan class=\"s1\"\u003e\u003cb\u003eGE American\u003c\/b\u003e\u003c\/span\u003e version, with \u003cspan class=\"s1\"\u003e\u003cb\u003eshort gray plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003ehalo getter\u003c\/b\u003e\u003c\/span\u003e construction, it offers the solid and reliable character typical of vintage US productions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe internal structure consists of \u003cspan class=\"s1\"\u003e\u003cb\u003eshort gray plates\u003c\/b\u003e\u003c\/span\u003e, a \u003cspan class=\"s1\"\u003e\u003cb\u003e9-pin\u003c\/b\u003e\u003c\/span\u003e miniature glass bulb, and a top halo getter. The code \u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7\u003c\/b\u003e\u003c\/span\u003e and the \u003cspan class=\"s1\"\u003e\u003cb\u003eU.S.A.\u003c\/b\u003e\u003c\/span\u003e marking are still legible on the glass, in typical GE style. The screen printing is worn and shows normal wear from long vintage storage, consistent with a vintage NOS tube.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThis tube comes with \u003cspan class=\"s1\"\u003e\u003cb\u003eVacuum Tubes Treasures protective packaging\u003c\/b\u003e\u003c\/span\u003e and has been tested on an \u003cspan class=\"s1\"\u003e\u003cb\u003eAmplitrex AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e, resulting in \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e, a particularly important characteristic for use in preamplifiers, line stages, drivers, and compatible phono applications.\u003c\/p\u003e\n\u003ch3 data-start=\"954\" data-end=\"1001\"\u003e\u003cstrong data-start=\"956\" data-end=\"999\"\u003eSound Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe 12AX7 \/ ECC83 GE offers a balanced, clean, and concrete sound reproduction, with a good ability to maintain order and control even in the most sensitive circuits. The overall character is that of a reliable, musical, and well-focused American tube.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003cbr\u003eThe low register is controlled, dry, and well-defined. It does not tend to artificially inflate the low end but offers a solid and orderly foundation, useful for maintaining precision and rhythm.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003cbr\u003eThe mids are clear, present, and easily discernible. Vocals sound natural and correctly positioned, with good intelligibility and a balanced timbre, without excessive warmth or intrusive colorations.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003cbr\u003eThe high range is clean, composed, and well-integrated. The extension is good, with an orderly rendition that favors definition and control, avoiding harshness in properly designed circuits.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003cbr\u003eThe dynamic response is prompt and stable. This GE conveys a sense of control and reliability, with well-managed transients and a good ability to follow musical variations without losing coherence.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003cbr\u003eThe soundstage is focused and orderly, with precise instrument separation and an overall stable presentation. The result is a credible, clean, and well-controlled reproduction.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p2\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 \/ ECC83 GE NOS\u003c\/b\u003e\u003c\/span\u003e is suitable for compatible hi-fi equipment, preamplifiers, line stages, drivers, and phono sections where the 12AX7 \/ ECC83 is specified by the design.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e selection makes it particularly interesting for sensitive audio applications, where quietness, stability, and signal purity are fundamental aspects.\u003c\/p\u003e\n\u003ch3\u003e🎸 \u003cstrong\u003eUse in Musical Instrument Amplifiers\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn compatible instrument amplifiers, this GE can offer a balanced, defined, and controlled response. It is suitable for those seeking a 12AX7 with a classic American character, good clarity, stable dynamic response, and predictable behavior.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eIt can be used in preamplification positions, drivers, or compatible gain stages, always respecting the equipment's specifications.\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=\"p2\"\u003eThis tube represents a credible and interesting American GE NOS selection: \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA\u003c\/b\u003e\u003c\/span\u003e, \u003cspan class=\"s1\"\u003e\u003cb\u003eshort gray plates\u003c\/b\u003e\u003c\/span\u003e, \u003cspan class=\"s1\"\u003e\u003cb\u003ehalo getter\u003c\/b\u003e\u003c\/span\u003e, tested on \u003cspan class=\"s1\"\u003e\u003cb\u003eAmplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e, and selected for \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe wear of the screen printing is consistent with long vintage storage and does not affect the verified electrical quality. This is not just a generic 12AX7, but a selected, tested, American NOS tube ready for use in compatible circuits where reliability, musicality, and operational stability are required.\u003c\/p\u003e\n\u003chr\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\u003cli\u003e\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e\u003cspan\u003e Va = 250V ; Vg = -2V\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1600 ; Ia = 1.2 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Result:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eVERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1600 ; Ia = 1.3 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm =\u003cspan\u003e \u003c\/span\u003e1700 ; Ia = 1.5 mA\u003c\/li\u003e\n\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 Low. Tested and suitable for use in hi-fi and guitar amplifiers, including V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are consistent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrument applications.\u003c\/span\u003e\u003c\/li\u003e\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\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eVintage Tubes - Tested and fully functional. Supplied in our custom box for optimal protection.  \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e\u003cspan\u003e Fair – Markings almost completely gone. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Code:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eundecipherable – General Electric Company, Syracuse 1, N. Y., production, identifiable by 1960s construction characteristics\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\u003eDiscover why our tubes are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":57534832935260,"sku":"03565","price":54.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_df60508f-9cd9-4497-919c-a483c1a15898.jpg?v=1777907749","url":"https:\/\/vacuumtubestreasures.com\/en-mc\/products\/12ax7-ecc83-ge-nos-short-gray-plates-halo-getter-tested-tube-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}