{"product_id":"12ax7-ecc83-mazda-valve-short-gray-plates-halo-getter-low-noise-mic-made-in-england-bva","title":"12AX7 \/ ECC83 Mazda Valve Short Gray Plates Halo Getter - Low Noise \u0026 Mic - Made in England BVA","description":"\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 \/ ECC83 Mazda Valve Short Gray Plates Halo Getter Made in England BVA\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eAMPLITREX Tested – Low Noise \u0026amp; Microphonics – VERY STRONG – Vintage British ECC83\u003c\/b\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDescription\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e12AX7 \/ ECC83 Mazda Valve\u003c\/b\u003e\u003c\/span\u003e, manufactured \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in England BVA\u003c\/b\u003e\u003c\/span\u003e, represents a refined British signal tube from the golden age of European production.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEnglish Mazda valves are particularly appreciated by enthusiasts for their careful construction, good production consistency, and balanced and musical sonic character, which helped make them a frequent presence in numerous British hi-fi and professional equipment.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe construction with \u003cspan class=\"s1\"\u003e\u003cb\u003eShort Gray Plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/span\u003e identifies a classic configuration of the English production of the era, appreciated for reliability, operational stability, and natural sound reproduction.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis tube has been carefully tested in our laboratory using the \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e, resulting \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e, with high emission and overall very interesting electrical characteristics for a vintage used example.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIt was also selected as \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e, a feature particularly appreciated in more sensitive audio applications.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFrom an aesthetic point of view, the example is in good vintage condition. As visible from the photographs, the original branded lettering is no longer present, while the internal structure is well preserved and retains all the charm of authentic vintage British ECC83s.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSonic Characteristics\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p3\"\u003eBritish ECC83 \/ 12AX7s with short plate structure are appreciated for a balanced, natural, and very pleasant musical presentation. This Mazda Valve pair offers the charm of vintage English production, with a generally refined, consistent, and well-controlled character.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan class=\"s1\"\u003eBass\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe low register is orderly, natural, and well-proportioned. It doesn't aim for an overly emphasized bass, but for a stable and controlled foundation, capable of supporting the music with balance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMidrange\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe midrange represents one of the most interesting aspects of this type of British ECC83. Vocals are present, natural, and well-articulated, with a pleasant harmonic texture and a reproduction very suitable for jazz, vocal, classical, blues, and acoustic music.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTreble\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe high range is sweet, refined, and well-integrated. Detail is present without becoming aggressive, with a setting suitable for prolonged listening and for systems where musicality is sought more than artificial brilliance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe dynamic response is fluid and well-controlled. The tubes maintain good legibility in complex musical passages, with a balanced and consistent reproduction.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eThe soundstage is stable, orderly, and well-proportioned. While not a precision matched pair, the consistent construction and electrical selection contribute to a natural and well-focused presentation in compatible circuits.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis Mazda ECC83 is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003ehi-fi preamplifiers;\u003c\/li\u003e\n\n\u003cli\u003eline stages;\u003c\/li\u003e\n\n\u003cli\u003ephono stages;\u003c\/li\u003e\n\n\u003cli\u003eintegrated amplifiers;\u003c\/li\u003e\n\n\u003cli\u003ecompatible vintage and modern hi-fi equipment;\u003c\/li\u003e\n\n\u003cli\u003edriver stages and signal circuits.\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 makes it particularly interesting even for sensitive circuit positions.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎸 Use in Musical Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eAlso in the musical field, this ECC83 can be an interesting choice for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eguitar amplifiers;\u003c\/li\u003e\n\n\u003cli\u003eboutique amplifiers;\u003c\/li\u003e\n\n\u003cli\u003estudio equipment;\u003c\/li\u003e\n\n\u003cli\u003etube preamplifiers.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eGood residual emission, contained noise, and balanced musical response contribute to a pleasant and versatile reproduction.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎯 Note for audiophiles and technicians\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis tube represents an interesting example of the British Mazda tradition and is particularly suitable for those who desire:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eauthentic Made in England BVA production;\u003c\/li\u003e\n\n\u003cli\u003eShort Gray Plates construction;\u003c\/li\u003e\n\n\u003cli\u003eHalo Getter;\u003c\/li\u003e\n\n\u003cli\u003eVERY STRONG emission;\u003c\/li\u003e\n\n\u003cli\u003eLow Noise \u0026amp; Microphonics;\u003c\/li\u003e\n\n\u003cli\u003ethe charm of vintage English ECC83s.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eAlthough it is a used tube, the overall value remains high thanks to the build quality, the excellent performance recorded in the test, and the typical character of the best British productions of the era.\u003c\/p\u003e\n\u003cp class=\"p4\"\u003eA selected, quiet, and very strong emission English Mazda ECC83, offered according to Vacuum Tubes Treasures quality standards.\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 VERY 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 Gm = 1400 ; Ia = 0.9 mA\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e Gm = 1500 ; Ia = 1.2 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\n\n\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e \u003c\/span\u003eLow. Suitable for many hi-fi and musical applications, particularly in line stages, drivers, and preamplifier positions that are not excessively critical.\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eNoise:\u003c\/strong\u003e Low and well controlled. Quiet 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 The sections are not perfectly aligned. The tubes are suitable for use in hi-fi in non-critical stages (input or driver) and in guitar amplifiers. Not recommended as a phase inverter or in applications requiring strict balance between sections.\u003c\/span\u003e\u003c\/li\u003e\n\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\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\u003eConditions:\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 – Lettering optimally preserved, minimal signs of age. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e absent, identifiable by construction characteristics.\u003cbr\u003e\u003cstrong\u003eType:\u003c\/strong\u003e ECC83 \/ 12AX7, revision I62\u003cbr\u003e\u003cstrong\u003eFactory \/ supply:\u003c\/strong\u003e Thorn-AEI \/ Ediswan, Mullard supply\u003cbr\u003e\u003cstrong\u003eDating:\u003c\/strong\u003e 1960s British production\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Perché le nostre valvole sono diverse – il protocollo VTT che migliora suono, affidabilità e durata\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eDiscover why our tubes are different – the VTT protocol that improves sound, reliability, and durability →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"MULLARD","offers":[{"title":"Default Title","offer_id":57765452054876,"sku":"03620","price":74.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_632d3987-bf83-4773-959e-feb2e938de9c.jpg?v=1780138799","url":"https:\/\/vacuumtubestreasures.com\/en-bg\/products\/12ax7-ecc83-mazda-valve-short-gray-plates-halo-getter-low-noise-mic-made-in-england-bva","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}