{"product_id":"6eu7-mullard-blackburn-short-plates-amplitrex-tested-made-in-gt-britain-60s","title":"6EU7 MULLARD Blackburn Short Plates AMPLITREX Tested Made in GT. BRITAIN '60s","description":"\u003cp class=\"p1\"\u003e\u003cb\u003e6EU7 MULLARD Blackburn Short Plates – Halo Getter – Made in GT. BRITAIN ’60s\u003c\/b\u003e\u003cspan class=\"s2\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX Tested – VERY STRONG – Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\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\u003e6EU7 Mullard Blackburn\u003c\/b\u003e\u003c\/span\u003e, manufactured in \u003cspan class=\"s1\"\u003e\u003cb\u003eGT. BRITAIN\u003c\/b\u003e\u003c\/span\u003e in the 1960s, is a highly sought-after tube for those looking for the authentic musical character of the best vintage British productions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe 6EU7 is a high-gain dual triode, electrically similar to the 12AX7\/ECC83 family but with a different pinout, often used in hi-fi and musical amplifiers where quietness, stability, and a rich, refined tonal rendition are required.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eShort Plates Mullard Blackburn\u003c\/b\u003e\u003c\/span\u003e construction is particularly valued for its balance, naturalness, and harmonic density. This tube has been tested on an \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e and classified as \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e, with \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e performance.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis is a tested and perfectly functioning vintage tube. The aesthetic condition is consistent with a tube of its age; please observe the photos carefully for details.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003eSonic Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe 6EU7 Mullard Blackburn offers a full, elegant, and very musical sound rendition, with a typical British tonal signature: body, fluidity, rich mids, and a never fatiguing presentation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003cbr\u003eThe bass is round, controlled, and well-integrated into the musical message. It does not aim for artificial impact but provides a solid, natural, and consistent foundation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003cbr\u003eThe midrange is the real strong point: vocals, guitars, strings, and acoustic instruments sound present, dense, and harmonically credible, with that pleasant materiality typical of the best Mullard productions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003cbr\u003eThe highs are sweet, refined, and well-extended, without harshness. The high end contributes to a continuous sense of musicality, maintaining detail and airiness without becoming aggressive.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003cbr\u003eThe dynamic response is fluid and progressive, with excellent ability to follow musical variations without stiffening the reproduction. The pair is stable, coherent, and pleasant even during prolonged listening sessions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003cbr\u003eThe soundstage is orderly, natural, and well-proportioned, with good depth and credible instrument separation. The presentation favors cohesion and musicality rather than an artificially analytical effect.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎧\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eUse in Hi-Fi Amplifiers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn the hi-fi field, this 6EU7 is suitable for devices compatible with this type of tube, especially where a refined, quiet, and musically engaging performance is desired. The \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e selection also makes it suitable for sensitive circuits, always subject to correct equipment compatibility.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎸\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eUse in Musical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eIn instrument amplifiers that use 6EU7, this Mullard Blackburn can offer a warm, harmonically rich, and very expressive tone. It is particularly interesting for those seeking a vintage response, with progressive saturation, full mids, and a sweet yet present high end.\u003c\/p\u003e\n\u003ch3 class=\"p3\"\u003e\u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎯\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003eNote for Audiophiles\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e6EU7 Mullard Blackburn Short Plates\u003c\/b\u003e\u003c\/span\u003e is a selected and tested tube, with a \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e result and \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e performance. The Blackburn construction, balanced tonal rendition, and testing quality make it a very interesting choice for compatible hi-fi and musical applications.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eA 6EU7 Mullard Blackburn with a refined and authentically vintage sound character, designed for those who want to integrate a vintage British tube into their equipment that is strong, quiet, and musically engaging.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTube tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube tester:\u003cbr\u003eVoltage Test: Va = 250V, Vg = -2V\u003cbr\u003eAverage 100% Gm = 1.6 ; Ia = 1.2 mA\u003cbr\u003e\u003cstrong\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSection 1: Gm = 1.4 ; Ia = 1.2 mA\u003c\/li\u003e\n\u003cli\u003eSection 2: Gm = 1.6 ; 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 hi-fi use, including phono stages and guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eNoise:\u003c\/strong\u003e Standard. Normal for this tube type. Suitable for line stages, drivers, and non-noise-sensitive 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 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003eFully operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e\u003cspan\u003e Silk screen on glass missing\u003c\/span\u003e. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e\u003cspan\u003e B9F3\u003c\/span\u003e→ B → Mullard, Blackburn - 9 (four digits) → 1969 - F → June - 1 → 3rd week of the month\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\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":"MULLARD","offers":[{"title":"Default Title","offer_id":57497350996316,"sku":"03559Z","price":45.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_997bf28e-2870-4be1-8b16-4409efa91cdc.jpg?v=1777533140","url":"https:\/\/vacuumtubestreasures.com\/en-lv\/products\/6eu7-mullard-blackburn-short-plates-amplitrex-tested-made-in-gt-britain-60s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}