{"product_id":"12au7a-ecc82-nos-baldwin-by-sylvania-long-gray-plates-halo-getter-tested-tube-made-in-usa-60s-1","title":"12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube Made in USA '60s","description":"\u003ch3\u003e12AU7A \/ ECC82 NOS Baldwin by SYLVANIA Long Gray Plates Halo Getter Tested Tube Made in USA '60s\u003c\/h3\u003e\u003cp class=\"p2\"\u003e\u003cb\u003eAMPLITREX Tested – Low Noise \u0026amp; Microphonics – Guitar Amp Grade – Vintage American SYLVANIA Production\u003c\/b\u003e\u003c\/p\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDescription\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cp class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003e12AU7 \/ ECC82 NOS Baldwin by Sylvania\u003c\/b\u003e\u003c\/span\u003e tube, \u003cspan class=\"s1\"\u003e\u003cb\u003eMade in USA in 1960\u003c\/b\u003e\u003c\/span\u003e, represents a classic American tube from the golden age of US tube production.\u003c\/p\u003e\u003cp class=\"p1\"\u003eTubes branded \u003cspan class=\"s1\"\u003e\u003cb\u003eBaldwin\u003c\/b\u003e\u003c\/span\u003e were intended for professional musical applications, particularly high-end electronic organs, where reliability, stability, and durability were fundamental requirements. Behind the Baldwin brand, in this case, we find the renowned production of \u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Electric Products Inc.\u003c\/b\u003e\u003c\/span\u003e, recognizable by the typical construction with \u003cspan class=\"s1\"\u003e\u003cb\u003eLong Gray Plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\u003cp class=\"p1\"\u003eThis tube has been tested with an \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e, resulting in \u003cspan class=\"s1\"\u003e\u003cb\u003eVERY STRONG\u003c\/b\u003e\u003c\/span\u003e emission, with low noise, contained microphonics, and \u003cspan class=\"s1\"\u003e\u003cb\u003esuccessfully passed the Burning Test\u003c\/b\u003e\u003c\/span\u003e.\u003c\/p\u003e\u003cp class=\"p1\"\u003eThe electrical performance is very high, with emission exceeding nominal reference values. The sections show a slight imbalance, a characteristic that does not limit its use in the intended applications but makes this particular sample interesting for musical uses and for positions not critical to section symmetry.\u003c\/p\u003e\u003cp class=\"p1\"\u003eFor this reason, the tube is particularly recommended for \u003cspan class=\"s1\"\u003e\u003cb\u003eguitar amplifiers\u003c\/b\u003e\u003c\/span\u003e, in positions like \u003cspan class=\"s1\"\u003e\u003cb\u003eV2, V3, and V4\u003c\/b\u003e\u003c\/span\u003e, where musicality, reliability, and tonal character are often more important than perfect electrical symmetry.\u003c\/p\u003e\u003cp class=\"p3\"\u003e\u003cb style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eTonal characteristics and sonic description\u003c\/b\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003eSylvania Long Gray Plates from the early 1960s are appreciated for a balanced, open, and natural sound, with a very recognizable American musicality.\u003c\/p\u003e\u003cp class=\"p3\"\u003eIn this matched pair selection, the consistency between the two tubes contributes to a stable, orderly, and very pleasing presentation, ideal for quality stereo systems.\u003c\/p\u003e\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003eThe low range is controlled, articulate, and well-supported. It offers a solid foundation without being intrusive, maintaining rhythm and clarity even in complex passages.\u003c\/p\u003e\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003eThe mids are natural, clear, and musical. Vocals and acoustic instruments are well-focused, with a balanced and pleasing harmonic texture.\u003c\/p\u003e\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTreble\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003eThe high range is open and clean, with good extension and a fluid, never aggressive, presentation. Detail remains well integrated into the musical message.\u003c\/p\u003e\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003eDynamics are prompt and consistent, with a stable and well-controlled response. The pair's matching helps maintain uniformity and timbral continuity between the two channels.\u003c\/p\u003e\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003eThe soundstage appears wide, stable, and well-organized. The consistency of the pair favors proper instrument separation and a balanced presentation of the stereophonic image.\u003c\/p\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Stereo Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cp class=\"p1\"\u003eThe tube can be used in:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eline stages\u003c\/li\u003e\n\u003cli\u003edriver stages\u003c\/li\u003e\n\u003cli\u003etube buffers\u003c\/li\u003e\n\u003cli\u003ehi-fi applications compatible with 12AU7 \/ ECC82\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"p3\"\u003eThe sections are not perfectly symmetrical, therefore it is not the ideal choice for applications requiring a high level of internal balance between the two sections.\u003c\/p\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎸 Use in Musical Amplifiers\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cp class=\"p1\"\u003eThis is probably the most interesting intended use for this sample.\u003c\/p\u003e\u003cp class=\"p2\"\u003eParticularly recommended for:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eV2\u003c\/li\u003e\n\u003cli\u003eV3\u003c\/li\u003e\n\u003cli\u003eV4\u003c\/li\u003e\n\u003cli\u003edriver stages\u003c\/li\u003e\n\u003cli\u003evintage and boutique amplifiers\u003c\/li\u003e\n\u003cli\u003eapplications where musicality and reliability are sought\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"p2\"\u003eThe combination of:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003every strong emission\u003c\/li\u003e\n\u003cli\u003elow noise\u003c\/li\u003e\n\u003cli\u003econtained microphonics\u003c\/li\u003e\n\u003cli\u003eSylvania Long Gray Plates construction\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"p1\"\u003emakes it a valid candidate for numerous musical applications.\u003c\/p\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e🎯 Note for musicians and technicians\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cp class=\"p1\"\u003eThis tube combines several highly appreciated elements:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSylvania Made in USA production\u003c\/li\u003e\n\u003cli\u003eBaldwin brand\u003c\/li\u003e\n\u003cli\u003eLong Gray Plates\u003c\/li\u003e\n\u003cli\u003eHalo Getter\u003c\/li\u003e\n\u003cli\u003eNOS – New Old Stock\u003c\/li\u003e\n\u003cli\u003eVERY STRONG emission\u003c\/li\u003e\n\u003cli\u003eLow Noise\u003c\/li\u003e\n\u003cli\u003eBurning Test OK\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp class=\"p3\"\u003eA particularly interesting selection for those who want a true vintage American tube intended for guitar amplifiers and compatible musical applications.\u003c\/p\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTest Results\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cp class=\"p2\"\u003eTubes tested on\u003cspan class=\"s1\"\u003e\u003cb\u003e AMPLITREX AT-1000 Tube Tester\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cp class=\"p3\"\u003e\u003cb\u003eTest Conditions:\u003c\/b\u003e Va = 250V, Vg = -8.5V\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAverage 100%:\u003c\/b\u003e\u003c\/span\u003e Gm = 2200 ; Ia = 10.5 mA\u003cbr\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTest Result:\u003c\/b\u003e\u003c\/span\u003e VERY STRONG\u003c\/p\u003e\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eTube #12\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2100 ; Ia = 8.3 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2400 ; Ia = 11.4 mA\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eAdditional Tests Performed\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBurning Test:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e 48h – OK\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMicrophonics:\u003c\/b\u003e Low. Tested and suitable for hi-fi use, including phono stages, and in guitar amplifiers. Also suitable for V1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBalance:\u003c\/b\u003e Good. The sections show consistent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEmission Quality:\u003c\/b\u003e Excellent – very strong and stable emission, without fluctuations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eShorts and GAS:\u003c\/b\u003e\u003cspan class=\"s2\"\u003e Absent.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eCondition\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eCondition:\u003c\/b\u003e NOS – New Old Stock – tested and functional. Supplied in our custom box for optimal protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFunctionality:\u003c\/b\u003e Perfectly operational.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCosmetic Condition:\u003c\/b\u003e Excellent – markings well preserved, minimal signs of age. See photos for details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eManufacturing Code: \u003c\/b\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e312 052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e → 312 indicates the manufacturer, which is \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSylvania Electric Products Inc., Emporium, Pennsylvania\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e. \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e052\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e → 0 indicates \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e1960\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e, 52 indicates the \u003c\/span\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003e52nd week of the year\u003c\/b\u003e\u003c\/span\u003e\u003cspan class=\"s2\"\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cspan class=\"s2\"\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\/span\u003e\u003c\/p\u003e","brand":"SYLVANIA","offers":[{"title":"Default Title","offer_id":58078247190876,"sku":"03672L","price":18.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_2e05d627-d320-4939-814a-bdf479931066.jpg?v=1781519230","url":"https:\/\/vacuumtubestreasures.com\/en-gb\/products\/12au7a-ecc82-nos-baldwin-by-sylvania-long-gray-plates-halo-getter-tested-tube-made-in-usa-60s-1","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}