{"product_id":"12au7-ecc82-mullard-blackburn-1958-long-gray-plates-goalpost-getter-strong-stable-amplitrex-tested","title":"12AU7 \/ ECC82 MULLARD Blackburn 1958 - Long Gray Plates - Goalpost Getter - Strong \u0026 Stable - Amplitrex Tested","description":"\u003cp style=\"text-align: left;\"\u003e \u003cstrong\u003e12AU7 \/ ECC82 MULLARD Blackburn 1958 - Long Gray Plates - Goalpost Getter - Strong \u0026amp; Stable - Amplitrex Tested - MADE IN GT. BRITAIN\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3 style=\"text-align: left;\"\u003e\n\n \u003cstrong\u003eDescription:\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e This \u003cspan class=\"s1\"\u003e\u003cb\u003eMullard 12AU7 \/ ECC82\u003c\/b\u003e\u003c\/span\u003e , produced in the historic \u003cspan class=\"s1\"\u003e\u003cb\u003eBlackburn factory (Great Britain) in 1958\u003c\/b\u003e\u003c\/span\u003e , belongs to the first and most appreciated production phase of the British ECC82.\u003cmeta charset=\"utf-8\"\u003e Original Mullard model, Blackburn (Great Britain) production, manufacturing code \u003cspan class=\"s1\"\u003e\u003cb\u003eB8F\u003c\/b\u003e\u003c\/span\u003e , dating back to 1958.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e The construction with \u003cspan class=\"s1\"\u003e\u003cb\u003elong gray plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003egoalpost getter\u003c\/b\u003e\u003c\/span\u003e identifies a version of great technical and historical interest, typical of the Mullards of the late '50s, characterized by mechanical solidity and an authoritative sound setting.\u003c\/p\u003e\n\n \u003cp class=\"p1\"\u003eThe sample was \u003cspan class=\"s1\"\u003e\u003cb\u003etested on an Amplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e . The internal sections show different values ​​from each other (about ~20%), while maintaining \u003cspan class=\"s1\"\u003e\u003cb\u003estable output and coherent behavior during the test\u003c\/b\u003e\u003c\/span\u003e . It is therefore not a balanced tube, but an electrically healthy and operational sample.\u003c\/p\u003e\n\n\u003ch3 style=\"text-align: left;\"\u003e \u003cstrong\u003eSound Characteristics\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eBass:\u003c\/b\u003e Full and well-structured. The low range is rounded and solid, with good support and natural depth.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eMids:\u003c\/b\u003e Warm, textured, and rich in harmonics. Vocals are dense and realistic, with that typical Mullard signature that emphasizes musicality and naturalness.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eHighs:\u003c\/b\u003e Sweet and well-integrated. The top end is extended but never aggressive, with a soft and refined texture.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e \u003cb\u003eDynamics:\u003c\/b\u003e Smooth and progressive. Transient response is natural, with a coherent and unrelenting musical delivery.\u003c\/p\u003e\n\n \u003cp class=\"p1\"\u003e\u003cb\u003eSoundstage:\u003c\/b\u003e Wide and well-organized soundstage, with good depth and stable image focus.\u003c\/p\u003e\n\n\u003ch3 style=\"text-align: left;\"\u003e \u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e Ideal for:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e line stages\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e preamplifiers\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e positions where perfect symmetry between the sections is not required\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p1\"\u003e Particularly suitable for systems that enhance body, naturalness and a harmonious imprint.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cb\u003e🎸 Use in Music Applications\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p3\"\u003e Also very valid in:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e instrument amplifiers\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e circuits where musicality and harmonic richness are priorities\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p3\"\u003e It offers a warm and engaging, typically British delivery.\u003c\/p\u003e\n\n\u003ch3\u003e \u003cb\u003e🎯 Note for audiophiles and technicians\u003c\/b\u003e\n\u003c\/h3\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e\n\n \u003cspan class=\"s1\"\u003eOriginal production\u003c\/span\u003e \u003cb\u003eMullard – Blackburn 1958\u003c\/b\u003e\n\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e Long Gray Plates – Goalpost Getter\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e\n\n \u003cspan class=\"s1\"\u003eTested on\u003c\/span\u003e \u003cb\u003eAmplitrex AT-1000\u003c\/b\u003e\n\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e Stable emission\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e Internal sections with a difference of ~20% (not balanced)\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e Consistent electrical behavior during testing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n \u003cp class=\"p3\"\u003eAn example of great historical charm, an authentic expression of Mullard production from the late 1950s, designed for those seeking musicality and British character in a vintage 12AU7, in true Vacuum Tubes Treasures style.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3 style=\"text-align: left;\"\u003e \u003cstrong\u003eTest Results:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cstrong\u003eValve tested on AMPLITREX AT-1000 Tube Tester:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -8.5V\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Result:\u003c\/strong\u003e STRONG \/ VERY STRONG\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cstrong\u003eValve:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 1600 ; Ia = 7.6 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2000 ; Ia = 10.2 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp style=\"text-align: left;\"\u003e \u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and approved for use in hi-fi, including phono stages and guitar amplifiers. Also suitable for V1.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – ​​Strong and stable output, no fluctuations.\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch3 style=\"text-align: left;\"\u003e \u003cstrong\u003eConditions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul style=\"text-align: left;\"\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage tubes - Tested and in perfect working order. Shipped in our custom box for optimal protection.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are not perfectly aligned. This tube is intended for use in hi-fi on non-critical stages (input or driver) and in guitar amplifiers. It is not suitable as a phase inverter or in applications requiring a precise balance between the sections.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e Very good – Clearly legible writing with minor signs of wear, no obvious defects. See photos for details.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp style=\"text-align: left;\"\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\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"MULLARD","offers":[{"title":"Default Title","offer_id":56840628011356,"sku":"03445","price":269.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_b97a4e97-6751-4954-9eb0-8dc1a3d86064.jpg?v=1772034955","url":"https:\/\/vacuumtubestreasures.com\/en-si\/products\/12au7-ecc82-mullard-blackburn-1958-long-gray-plates-goalpost-getter-strong-stable-amplitrex-tested","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}