{"product_id":"12ax7-ecc83-mullard-blackburn-mc1-long-gray-plates-goalpost-getter-made-in-gt-britain-1957-tested-tube","title":"12AX7 \/ ECC83 Mullard Blackburn MC1 Long Gray Plates Goalpost Getter Made in GT. Britain 1957 Tested Tube","description":"\u003cp\u003e\u003cstrong\u003e12AX7 \/ ECC83 Mullard Blackburn MC1 Long Gray Plates Goalpost Getter Made in GT. Britain 1957\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eAMPLITREX Tested – Balanced Sections – Low Noise \u0026amp; Microphonics – Vintage Blackburn Production\u003c\/b\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\u003e12AX7 \/ ECC83 Mullard\u003c\/b\u003e\u003c\/span\u003e, produced in the historic \u003cspan class=\"s1\"\u003e\u003cb\u003eBlackburn (code MC1)\u003c\/b\u003e\u003c\/span\u003e factory in \u003cspan class=\"s1\"\u003e\u003cb\u003e1957\u003c\/b\u003e\u003c\/span\u003e, represents one of the most fascinating and sought-after versions from the golden age of British Mullard production.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe combination of \u003cspan class=\"s1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/span\u003e and the rare \u003cspan class=\"s1\"\u003e\u003cb\u003eGoalpost Getter\u003c\/b\u003e\u003c\/span\u003e identifies a construction typical of the early 1950s Blackburn ECC83s, a period that many enthusiasts consider the qualitative peak of Mullard production.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThese tubes were made at a time when reliability, construction precision, and sound quality were fundamental requirements for professional, broadcast, and high-end hi-fi equipment.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eAlmost seventy years after its production, this ECC83 still retains much of the charm and sonic personality that made Mullard Blackburn legendary in the audio world.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe tube has been carefully tested in our laboratory using \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000\u003c\/b\u003e\u003c\/span\u003e, proving to be perfectly functional, quiet, and well-balanced between its two sections.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eFrom an aesthetic point of view, it is in \u003cspan class=\"s1\"\u003e\u003cb\u003eexcellent condition\u003c\/b\u003e\u003c\/span\u003e, with well-preserved original screen printing and a very clean internal structure, as shown in the photographs.\u003c\/p\u003e\n\u003ch3 data-start=\"1263\" data-end=\"1288\"\u003e\u003cstrong\u003eSonic Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe 1950s Mullard Blackburn Long Plate tubes are considered by many enthusiasts to be among the most musical ECC83s ever produced.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eTheir sonic character emphasizes natural timbre, harmonic richness, and the ability to make music engaging without artifice.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe bass range is full and credible, with good harmonic presence and a natural sense of body.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe mid-range represents the true strength of these early Mullard Blackburns.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eVocals take on an extremely realistic presence, and acoustic instruments are reproduced with a harmonic richness that has contributed to the fame of this production.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe highs are refined, fluid, and free from harshness, maintaining excellent detail without becoming fatiguing.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe dynamic presentation prioritizes naturalness and musical coherence, with a very credible reproduction of nuances.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe soundstage appears wide and well-organized, with stable images and a pleasant three-dimensional sensation.\u003c\/p\u003e\n\u003ch3 data-start=\"2164\" data-end=\"2196\"\u003e\u003cstrong\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis Mullard ECC83 is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eTube preamplifiers\u003c\/li\u003e\n\n\u003cli\u003eLine stages\u003c\/li\u003e\n\n\u003cli\u003eMM and MC phono stages\u003c\/li\u003e\n\n\u003cli\u003eIntegrated amplifiers\u003c\/li\u003e\n\n\u003cli\u003eVintage British hi-fi amplifiers\u003c\/li\u003e\n\n\u003cli\u003eHigh-quality audio equipment\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e selection also makes it suitable for particularly sensitive circuit positions.\u003c\/p\u003e\n\u003ch3 data-start=\"2481\" data-end=\"2515\"\u003e\u003cstrong\u003e🎸 Use in Musical Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003e1950s Mullard Blackburns are also highly prized by musicians and users of vintage amplifiers.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThey can offer:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eRich and harmonically complex timbre\u003c\/li\u003e\n\n\u003cli\u003eNatural musical response\u003c\/li\u003e\n\n\u003cli\u003eExcellent reproduction of dynamic nuances\u003c\/li\u003e\n\n\u003cli\u003eGreat sonic personality\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003eParticularly interesting for boutique amplifiers and restorations of historical equipment.\u003c\/p\u003e\n\u003ch3 data-start=\"2803\" data-end=\"2827\"\u003e\u003cstrong\u003e🎯 Note for Audiophiles\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe early \u003cspan class=\"s1\"\u003e\u003cb\u003eMullard Blackburn MC1 Goalpost Getter\u003c\/b\u003e\u003c\/span\u003e represents one of the most sought-after configurations in the landscape of vintage British ECC83s.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe combination of:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eBlackburn 1957 Production\u003c\/li\u003e\n\n\u003cli\u003eLong Gray Plates\u003c\/li\u003e\n\n\u003cli\u003eGoalpost Getter\u003c\/li\u003e\n\n\u003cli\u003eOriginal Mullard Codes\u003c\/li\u003e\n\n\u003cli\u003eExcellent aesthetic condition\u003c\/li\u003e\n\n\u003cli\u003eLow Noise \u0026amp; Microphonics\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003emakes this example particularly interesting for both audio use and collecting.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eAlthough it presents an emission level now classified as \u003cspan class=\"s1\"\u003e\u003cb\u003eGOOD\u003c\/b\u003e\u003c\/span\u003e, the tube remains perfectly functional, stable, and musically very interesting, preserving the authentic character of the early Mullard Blackburns.\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\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 GOOD\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 Gm = 1000 ; Ia = 0.7 mA\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e Gm = 1000 ; Ia = 0.8 mA\u003c\/span\u003e\n\n\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\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and suitable for hi-fi use, including phono stages and guitar amplifiers. Also suitable for V1.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eNoise:\u003c\/strong\u003e Low and well-controlled. Silent operation in hi-fi and musical amplifiers in designated positions.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Sections are consistent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrumental applications.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Good Emission – Good 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\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 Vintage Tubes - Tested and fully functional. Supplied in our custom box for optimal protection. \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 Excellent – Markings well-preserved, minimal signs of age. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003emC1 B7D→ \u003cmeta charset=\"utf-8\"\u003emCx indicates an ECC83 long plates with the sequential progression of x, where the increment of x indicates production changes - \u003cmeta charset=\"utf-8\"\u003eB7D B → Mullard, Blackburn - 7 (three digits) → 1957 - D → April\u003cbr\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\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":"MULLARD","offers":[{"title":"Default Title","offer_id":57774909030748,"sku":"03621","price":119.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_527ba35c-4ca0-4ee7-aee3-cca1fac465b0.jpg?v=1780309532","url":"https:\/\/vacuumtubestreasures.com\/en-ie\/products\/12ax7-ecc83-mullard-blackburn-mc1-long-gray-plates-goalpost-getter-made-in-gt-britain-1957-tested-tube","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}