{"product_id":"12ax7-ecc83-amperex-bugle-boy-mc6-amplitrex-tested-long-plates-foil-getter-58","title":"12AX7 \/ ECC83 Amperex Bugle Boy mC6 AMPLITREX Tested Long Plates Foil Getter '58","description":"\u003ch3\u003e\u003cstrong\u003e12AX7 \/ ECC83 Amperex Bugle Boy mC6 Long Plates – Foil Getter – Heerlen 1958\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAMPLITREX Tested – 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 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 = 0.9 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1400 ; Ia = 1.0 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 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 Strong – Strong and regular emission, suitable for any application.\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\u003e12AX7 \/ ECC83 AMPEREX Bugle Boy mC6\u003c\/strong\u003e, authentic \u003cstrong\u003ePhilips Heerlen Made in Holland 1958\u003c\/strong\u003e production, featuring the sought-after \u003cstrong\u003eLong Plates with Foil Getter\u003c\/strong\u003e construction, one of the most appreciated configurations among early Dutch ECC83s and particularly interesting for enthusiasts of high-level vintage European tubes.\u003c\/p\u003e\n\u003cp\u003eThe engraved code \u003cstrong\u003emC6 Δ8G\u003c\/strong\u003e precisely identifies this historical production: \u003cstrong\u003eΔ\u003c\/strong\u003e indicates the Philips factory in \u003cstrong\u003eHeerlen, Holland\u003c\/strong\u003e, while \u003cstrong\u003e8G\u003c\/strong\u003e places manufacturing in \u003cstrong\u003eJuly 1958\u003c\/strong\u003e. The famous \u003cstrong\u003eAmperex Bugle Boy\u003c\/strong\u003e branding, combined with the Long Plates and Foil Getter of early Heerlen productions, makes this example particularly sought after for both audio use and its collectible interest.\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, obtaining a \u003cstrong\u003eSTRONG\u003c\/strong\u003e rating, with \u003cstrong\u003eGm 1200 \/ Ia 0.9 mA\u003c\/strong\u003e and \u003cstrong\u003eGm 1400 \/ Ia 1.0 mA\u003c\/strong\u003e values. The sections show good overall balance, and the emission is strong, regular, and stable.\u003c\/p\u003e\n\u003cp\u003eIt has also passed a \u003cstrong\u003e48-hour Burn-in \/ Stability Test\u003c\/strong\u003e and has been selected for \u003cstrong\u003eLow Noise \u0026amp; Microphonics\u003c\/strong\u003e, a particularly important characteristic for a high-gain ECC83. It is therefore suitable for \u003cstrong\u003eV1 and the most sensitive audio stages\u003c\/strong\u003e, as well as for a wide range of hi-fi and instrumental applications. No shorts, gas, or other anomalies were detected.\u003c\/p\u003e\n\u003cp\u003eSonically, the late 1950s \u003cstrong\u003eAmperex Bugle Boy Long Plates Heerlen\u003c\/strong\u003e are particularly appreciated for a \u003cstrong\u003erich, open, and musical\u003c\/strong\u003e reproduction, with natural and harmonically complex mids, articulated bass, and airy, detailed high frequencies without being aggressive. The presentation is engaging and three-dimensional, with a broad and well-focused soundstage: characteristics that have made these early Heerlen productions among the most desired European vintage ECC83s.\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 seeking the refined character of early Philips\/Amperex Dutch productions.\u003c\/p\u003e\n\u003cp\u003eThe tube is \u003cstrong\u003eVintage\u003c\/strong\u003e, carefully tested, and fully functional. The aesthetic condition is \u003cstrong\u003egood\u003c\/strong\u003e, with partially eroded but still legible markings and a well-preserved tube body. 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 1958\u003c\/strong\u003e, genuinely tested and selected by \u003cstrong\u003eVacuum Tubes Treasures\u003c\/strong\u003e, ideal for those who desire an authentic 1950s Dutch ECC83 that is \u003cstrong\u003estrong, Low Noise \u0026amp; Microphonics, and with the prestigious Long Plates\/Foil Getter construction of early Heerlen productions\u003c\/strong\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\u003eConditions:\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\u003eAesthetic condition:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGood – Markings partially eroded, but still legible. Tube body in good condition. See photos for details.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eManufacturing Code: \u003c\/strong\u003emC6 Δ8G - \u003cmeta charset=\"utf-8\"\u003e Δ → Heerlen (Holland), 8 (on three digits) → 1958 - G → July \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":58918911869276,"sku":"03778Y","price":249.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_603b0fc3-251d-4d9b-bc61-5bc58e450dc5.jpg?v=1788366015","url":"https:\/\/vacuumtubestreasures.com\/en-lv\/products\/12ax7-ecc83-amperex-bugle-boy-mc6-amplitrex-tested-long-plates-foil-getter-58","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}