{"product_id":"12ax7-ecc83-amperex-bugle-boy-mc6-amplitrex-tested-long-plates-foil-getter-59","title":"12AX7 \/ ECC83 Amperex Bugle Boy mC6 AMPLITREX Tested Long Plates Foil Getter '59","description":"\u003ch3\u003e\u003cstrong\u003e12AX7 \/ ECC83 Amperex Bugle Boy mC6 Long Plates – Foil Getter – Heerlen 1959\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAMPLITREX Tested \u003cmeta charset=\"utf-8\"\u003e– VERY STRONG – Low Noise \u0026amp; Microphonics – Vintage Heerlen Production\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 = -2V\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 = 1600 ; Ia = 1.2 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\u003cspan\u003e \u003c\/span\u003eGm = 1200 ; Ia = 1.1 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1400 ; Ia = 1.2 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 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\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Good. The sections show consistent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.\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\u003eFine \u003cstrong\u003e12AX7 \/ ECC83 AMPEREX Bugle Boy mC6\u003c\/strong\u003e, authentic \u003cstrong\u003ePhilips Heerlen Made in Holland 1959\u003c\/strong\u003e production, featuring the sought-after \u003cstrong\u003eLong Plates with Foil Getter\u003c\/strong\u003e construction, one of the most interesting and desired configurations among vintage Dutch ECC83s from the late 1950s.\u003c\/p\u003e\n\u003cp\u003eThe engraved code \u003cstrong\u003emC6 Δ9C\u003c\/strong\u003e identifies the historic Philips plant in \u003cstrong\u003eHeerlen, Holland\u003c\/strong\u003e, and places production in \u003cstrong\u003eMarch 1959\u003c\/strong\u003e. The famous \u003cstrong\u003eAmperex Bugle Boy\u003c\/strong\u003e branding, combined with the Long Plates and Foil Getter, makes this example particularly interesting both for use in high-level audio systems and for those seeking authentic vintage European productions.\u003c\/p\u003e\n\u003cp\u003eThe tube has been carefully tested in our lab 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 1200 \/ Ia 1.1 mA\u003c\/strong\u003e and \u003cstrong\u003eGm 1400 \/ Ia 1.2 mA\u003c\/strong\u003e, with excellent, very strong and stable emission. The balance is good and fully compatible with use in hi-fi and musical amplifiers.\u003c\/p\u003e\n\u003cp\u003eIt also passed a \u003cstrong\u003e48-hour Burn-in \/ Stability Test\u003c\/strong\u003e and was selected as \u003cstrong\u003eLow Noise \u0026amp; Microphonics\u003c\/strong\u003e, making it suitable even for the \u003cstrong\u003emost sensitive audio stages\u003c\/strong\u003e, including the \u003cstrong\u003eV1\u003c\/strong\u003e position, as well as preamplifiers, phono stages, and guitar amplifiers. No shorts, gas, or anomalies were detected.\u003c\/p\u003e\n\u003cp\u003eSonically, the \u003cstrong\u003eAmperex Bugle Boy Long Plates Heerlen\u003c\/strong\u003e are particularly appreciated for a \u003cstrong\u003erich, airy, and musical\u003c\/strong\u003e sound, with natural and well-articulated mids, present but controlled bass, and open and detailed high frequencies. The soundstage tends to be wide and three-dimensional, with a fluid and refined presentation that has made these early Dutch productions particularly sought after by tube-rolling enthusiasts.\u003c\/p\u003e\n\u003cp\u003eIdeal for \u003cstrong\u003ehi-fi preamplifiers, phono stages, integrated amplifiers, line stages, DACs and tube buffers, and guitar amplifiers\u003c\/strong\u003e compatible with \u003cstrong\u003e12AX7 \/ ECC83\u003c\/strong\u003e, especially when the character of historical \u003cstrong\u003ePhilips\/Amperex Heerlen\u003c\/strong\u003e productions is desired.\u003c\/p\u003e\n\u003cp\u003eThe tube is \u003cstrong\u003eVintage\u003c\/strong\u003e, carefully tested, and perfectly functional. The cosmetic condition is \u003cstrong\u003esufficient\u003c\/strong\u003e, with the labels almost completely faded, but the manufacturing code remains identifiable. It comes in our custom box for optimal protection.\u003c\/p\u003e\n\u003cp\u003eA sought-after \u003cstrong\u003eAMPEREX Bugle Boy mC6 12AX7 \/ ECC83 Long Plates Foil Getter Heerlen from 1959\u003c\/strong\u003e, genuinely tested and selected by \u003cstrong\u003eVacuum Tubes Treasures\u003c\/strong\u003e, ideal for those seeking an authentic vintage Dutch ECC83 that is \u003cstrong\u003every strong, Low Noise \u0026amp; Microphonics, and features the prestigious Long Plates\/Foil Getter construction of early Heerlen productions\u003c\/strong\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\u003cspan\u003e Vintage Tubes - Tested and fully functional. Supplied in our custom box for optimal protection.\u003c\/span\u003e\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 Sufficient – Labels almost completely faded. See photos for details.\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eManufacturing Code: \u003c\/strong\u003emC6 (barely visible) Δ9C - \u003cmeta charset=\"utf-8\"\u003e Δ → Heerlen (Holland), 9 (on three digits) → 1959 - C → March \u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\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":"AMPEREX","offers":[{"title":"Default Title","offer_id":58919922729308,"sku":"03779Y","price":402000.0,"currency_code":"KRW","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/5_8f29726f-6391-44d4-86c4-b1d51eb2a24b.jpg?v=1788370218","url":"https:\/\/vacuumtubestreasures.com\/en-kr\/products\/12ax7-ecc83-amperex-bugle-boy-mc6-amplitrex-tested-long-plates-foil-getter-59","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}