{"product_id":"12at7-ecc81-mullard-labeled-ge-gray-plates-o-getter-tested-tube-made-in-gt-britain","title":"12AT7 \/ ECC81 GE by MULLARD Blackburn Wing Gray Plates Halo Getter Tested Tube MADE IN GT. BRITAIN","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cstrong data-end=\"190\" data-start=\"131\"\u003e12AT7 \/ ECC81 GE by Mullard – Blackburn (Great Britain)\u003c\/strong\u003e\u003cbr data-end=\"193\" data-start=\"190\"\u003e \u003cstrong data-end=\"241\" data-start=\"193\"\u003eWing Gray Plates – Halo Getter – Tested Tube\u003c\/strong\u003e\u003cbr data-end=\"244\" data-start=\"241\"\u003e \u003cstrong data-end=\"301\" data-start=\"244\"\u003eLow Noise \u0026amp; Microphonics – Vintage British Production '60s\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003e \u003cstrong\u003eDescription:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n \u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003e12AT7 \/ ECC81 GE by MULLARD\u003c\/b\u003e\u003c\/span\u003e , produced in the historic \u003cspan class=\"s1\"\u003e\u003cb\u003eBlackburn factory (Great Britain)\u003c\/b\u003e\u003c\/span\u003e in \u003cspan class=\"s1\"\u003e\u003cb\u003e1963\u003c\/b\u003e\u003c\/span\u003e , is a highly prized signal tube, an authentic expression of the English Mullard school intended for the \u003cspan class=\"s1\"\u003e\u003cb\u003eGE\u003c\/b\u003e\u003c\/span\u003e market. The construction with \u003cspan class=\"s1\"\u003e\u003cb\u003ewing gray plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003ehalo getter\u003c\/b\u003e\u003c\/span\u003e identifies one of the most popular configurations of the British ECC81 of the early 1960s, known for its reliability, operational stability and refined sonic character.\u003c\/p\u003e\n\n\u003cp class=\"p1\"\u003e The valve is \u003cspan class=\"s1\"\u003e\u003cb\u003etested\u003c\/b\u003e\u003c\/span\u003e and perfectly efficient, ready for use in quality hi-fi and music applications.\u003c\/p\u003e\n\n\u003ch3 class=\"p3\"\u003e \u003cstrong\u003eSound Characteristics\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p3\"\u003e \u003cb\u003eBass:\u003c\/b\u003e Compact, well-controlled, and uncluttered. The low end is precise and coherent, with a quick response that maintains balance and clarity.\u003c\/p\u003e\n\n \u003cp class=\"p3\"\u003e\u003cb\u003eMids:\u003c\/b\u003e Clear, present, and harmonically rich. Vocals sound natural and well-sculpted, with that signature Mullard musicality that lends realism and fluidity.\u003c\/p\u003e\n\n\u003cp class=\"p3\"\u003e \u003cb\u003eHighs:\u003c\/b\u003e Open, silky, and well-extended. The high end is refined and never aggressive, making for detailed yet relaxing listening.\u003c\/p\u003e\n\n\u003cp class=\"p3\"\u003e \u003cb\u003eDynamics:\u003c\/b\u003e Lively and controlled. Transient response is prompt, with legible microdynamics that make music reproduction energetic and precise.\u003c\/p\u003e\n\n\u003cp class=\"p3\"\u003e \u003cb\u003eSoundstage:\u003c\/b\u003e Wide and well-focused. The soundstage is stable, with proper instrument separation and believable depth.\u003c\/p\u003e\n\n\u003ch3 class=\"p3\"\u003e \u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎧\u003c\/span\u003e Use in Hi-Fi Amplifiers\u003c\/strong\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 input and driver stages,\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e preamplifiers and hi-fi amplifiers that require clarity, speed and control,\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e systems oriented towards transparency and definition without sacrificing musicality.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3 class=\"p3\"\u003e \u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎸\u003c\/span\u003e Use in Music Applications\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p1\"\u003e Also highly appreciated in:\u003c\/p\u003e\n\n\u003cul\u003e\n\n \u003cli class=\"p1\"\u003eguitar amplifiers and instruments,\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e circuits where quick attack, definition and controlled dynamic response are required.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p1\"\u003e It offers a bright but always balanced character, typically British.\u003c\/p\u003e\n\n\u003ch3 class=\"p3\"\u003e \u003cstrong\u003e\u003cspan class=\"s2\"\u003e🎯\u003c\/span\u003e Note for audiophiles and technicians\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cp class=\"p3\"\u003e \u003cspan class=\"s2\"\u003eThis\u003c\/span\u003e \u003cb\u003e12AT7 \/ ECC81 GE by MULLARD Blackburn – Wing Gray Plates – Halo Getter (1963)\u003c\/b\u003e \u003cspan class=\"s2\"\u003erepresents:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli class=\"p1\"\u003e\n\n \u003cspan class=\"s1\"\u003eauthentic\u003c\/span\u003e \u003cb\u003eMullard production Made in Great Britain\u003c\/b\u003e \u003cspan class=\"s1\"\u003e,\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e GE branded supply for the international market,\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e solid and historically correct construction,\u003c\/li\u003e\n\n\u003cli class=\"p1\"\u003e refined, fast and musical timbre.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp class=\"p1\"\u003e A valve designed for those who desire \u003cspan class=\"s1\"\u003e\u003cb\u003ethe precision and elegance of the Mullard ECC81\u003c\/b\u003e\u003c\/span\u003e , capable of enhancing hi-fi and musical systems with coherence, detail and personality in full \u003cspan class=\"s1\"\u003e\u003cb\u003eVacuum Tubes Treasures\u003c\/b\u003e\u003c\/span\u003e style.\u003c\/p\u003e\n\n\u003chr\u003e\n\n\u003ch3\u003e \u003cstrong\u003eTest Results:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n \u003cp\u003eValve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -2V\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 5.5 ; Ia = 10.0 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\n\u003cp\u003e \u003cstrong\u003eValve:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 4.1 ; Ia = 8.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 4.5 ; Ia = 9.2 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e \u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low Noise \u0026amp; Microphonics – Tested and compliant for use in hi-fi systems and guitar amplifiers.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eBalance:\u003c\/strong\u003e The sections present a coherent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between the sections is not required.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – ​​Very 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\u003e \u003cstrong\u003eConditions:\u003c\/strong\u003e\n\u003c\/h3\u003e\n\n\u003cul\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\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e Good – Lettering partially eroded, but still legible. Valve body in good condition. See photos for details.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e TK3 B3A2 →\u003cmeta charset=\"utf-8\"\u003e TKx indicates an ECC81 with the sequential progression of x, where the increment of x indicates the production changes -\u003cmeta charset=\"utf-8\"\u003e B3A2 B → Mullard, Blackburn - 3 (out of four digits) → 1963 - A → January - 2 → 2nd week of the month\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e \u003ca href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" title=\"Why our tubes are different – ​​the VTT protocol that improves sound, reliability and durability\" rel=\"noopener\" 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":42997037170935,"sku":"00768S","price":44.9,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_ef38e5a4-ec19-4bc2-8259-788a1456ea9e.jpg?v=1770040654","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12at7-ecc81-mullard-labeled-ge-gray-plates-o-getter-tested-tube-made-in-gt-britain-en","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}