{"product_id":"12ax7-ecc83-ge-long-gray-plates-horse-shoe-getter-low-noise-mic-made-in-usa","title":"12AX7 \/ ECC83 GE Long Gray Plates Horse Shoe Getter - Low Noise \u0026 Mic - Made in USA","description":"\u003cp\u003e\u003cstrong\u003e12AX7 \/ ECC83 GE Long Gray Plates Horse Shoe Getter - Low Noise \u0026amp; Mic - Made in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eAMPLITREX Tested – Low Noise \u0026amp; Microphonics - \u003c\/b\u003e\u003cb\u003eVintage American Long Plates\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 General Electric\u003c\/b\u003e\u003c\/span\u003e, \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA\u003c\/b\u003e\u003c\/span\u003e production, represents one of the most interesting configurations of vintage American small signal tube manufacturing.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe construction with \u003cspan class=\"s1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/span\u003e and characteristic \u003cspan class=\"s1\"\u003e\u003cb\u003eHorse Shoe Getter\u003c\/b\u003e\u003c\/span\u003e belongs to the early generations of GE ECC83s, a configuration generally attributable to the second half of the 1950s, preceding the more common halo getter versions of subsequent years.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe absence of the original silk-screened logo prevents a precise dating through manufacturing codes. However, based on the constructive characteristics, internal structure, and the particular horse shoe getter, this tube can be cautiously attributed to a probable \u003cspan class=\"s1\"\u003e\u003cb\u003elate 1950s production\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis is a used tube, carefully tested and selected in our laboratory using the \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e, found to be \u003cspan class=\"s1\"\u003e\u003cb\u003eSTRONG\u003c\/b\u003e\u003c\/span\u003e, with low background noise and good operational stability.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe GE Long Gray Plates from this period are particularly appreciated for the constructive quality typical of American production of the era and for their balanced and musical sonic character.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003eSonic Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe early GE Long Gray Plates with Horse Shoe Getter are known for a natural, well-articulated, and very pleasant sonic presentation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe sound signature prioritizes balance, timbral correctness, and good readability of the musical message, while maintaining the warm and credible character typical of the best vintage American productions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe bass range is well-controlled and natural, with a good sense of solidity and an always orderly and coherent presentation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe mids are clear, well-focused, and musical. Vocals maintain naturalness and presence, while acoustic instruments retain a balanced harmonic texture.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe high range is open and well-extended, with present but never aggressive detail. Listening remains fluid and pleasant even for long sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe dynamic response is linear and natural, with a good ability to follow musical variations without stiffness or perceptible compression.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe soundstage appears stable and well-organized, with correct instrument separation and good perception of space.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎧 \u003c\/span\u003eUse in Hi-Fi Amplifiers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis 12AX7 \/ ECC83 GE is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003ehi-fi preamplifiers\u003c\/li\u003e\n\n\u003cli\u003eline stages\u003c\/li\u003e\n\n\u003cli\u003ecompatible phono stages\u003c\/li\u003e\n\n\u003cli\u003eintegrated amplifiers\u003c\/li\u003e\n\n\u003cli\u003ecompatible driver stages\u003c\/li\u003e\n\n\n\u003c\/ul\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 circuits where quietness and operational stability are important aspects.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎸 \u003c\/span\u003eUse in Musical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn musical instrument amplifiers, this GE Long Gray Plates offers:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003ebalanced and natural response\u003c\/li\u003e\n\n\u003cli\u003egood harmonic definition\u003c\/li\u003e\n\n\u003cli\u003emusical and well-present mids\u003c\/li\u003e\n\n\u003cli\u003estable and predictable behavior\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eA vintage American configuration that lends itself very well to both vintage amplifiers and compatible boutique creations.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎯 \u003c\/span\u003eNote for Audiophiles\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 \/ ECC83 GE Long Gray Plates Horse Shoe Getter Made in USA\u003c\/b\u003e\u003c\/span\u003e represents a vintage American selection of considerable interest for those seeking:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eauthentic General Electric USA production\u003c\/li\u003e\n\n\u003cli\u003eLong Gray Plates structure\u003c\/li\u003e\n\n\u003cli\u003erare Horse Shoe Getter\u003c\/li\u003e\n\n\u003cli\u003eLow Noise \u0026amp; Microphonics\u003c\/li\u003e\n\n\u003cli\u003egood internal balance\u003c\/li\u003e\n\n\u003cli\u003emusicality typical of American ECC83s from the 1950s\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThe classification is \u003cspan class=\"s1\"\u003e\u003cb\u003eSTRONG\u003c\/b\u003e\u003c\/span\u003e, with a regular electrical profile, stable emission, and well-aligned sections.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eA tube that retains the charm of early GE long plate productions, selected according to Vacuum Tubes Treasures standards.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 250V, Vg = -2V\u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eGm = 1600 ; Ia = 1.2 mA\u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e STRONG\u003c\/p\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 = 1400 ; Ia = 0.8 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2\u003c\/strong\u003e: Gm = \u003cmeta charset=\"utf-8\"\u003e1300 ; Ia = 0.7 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low Noise \u0026amp; Microphonics – Tested and suitable for use in hi-fi systems and guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are consistent and well-aligned, making the tube suitable also 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 Good Emission – Good and regular emission, suitable for any application\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShort Circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\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 Vintage Tubes - Tested and perfectly functional. Supplied in our custom box for optimal protection. \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 Fair – Markings completely worn off. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e absent, identifiable by construction characteristics. Late 1950s\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e → General Electric Company, Syracuse 1, N. Y.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" rel=\"noopener\" 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":57765170315612,"sku":"03619T","price":54.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_d0d19aa6-4378-4bbf-887d-f0533d5dc9f9.jpg?v=1780134898","url":"https:\/\/vacuumtubestreasures.com\/en-ee\/products\/12ax7-ecc83-ge-long-gray-plates-horse-shoe-getter-low-noise-mic-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}