{"product_id":"12au7-ecc82-baldwin-by-rca-amplitrex-matched-pair-clear-top-long-gray-plates-side-d-getter-tubes-1","title":"12AU7 \/ ECC82 Baldwin by RCA AMPLITREX Matched Pair Clear Top Long Gray Plates Side D Getter Tubes","description":"\u003cp\u003e\u003cstrong\u003e12AU7 \/ ECC82 Baldwin by RCA Matched Pair Clear Top Long Gray Plates Side D Getter Tubes Made in USA '50s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAMPLITREX Tested - Low Noise \u0026amp; Microphonics - VERY STRONG\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003eDescription:\u003c\/h3\u003e\n\u003cp\u003eThis \u003cstrong\u003ematched pair of 12AU7 \/ ECC82 Baldwin by RCA – Made in USA, circa 1959\u003c\/strong\u003e represents one of the most interesting configurations of late 1950s American production.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBaldwin\u003c\/strong\u003e branded tubes were often produced by RCA for organ applications, following high quality standards and a selection focused on stability and consistency over time.\u003c\/p\u003e\n\u003cp\u003eThe construction configuration is particularly distinctive:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eClear Top\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eLong Gray Plates\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eSide D Getter\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe \u003cstrong\u003eClear Top\u003c\/strong\u003e design, typical of some RCA productions, promotes more efficient dissipation and a more open and linear response, contributing to clean and well-defined sound reproduction.\u003c\/p\u003e\n\u003cp\u003eThe pair comes from the \u003cstrong\u003esame manufacturing batch\u003c\/strong\u003e and has undergone careful selection using \u003cstrong\u003eAmplitrex AT-1000\u003c\/strong\u003e, resulting in a \u003cstrong\u003ematched pair\u003c\/strong\u003e with extremely close values.\u003c\/p\u003e\n\u003cp\u003eBoth tubes are classified as \u003cstrong\u003eVERY STRONG\u003c\/strong\u003e, with \u003cstrong\u003estable emission, low noise and microphonics\u003c\/strong\u003e, and have \u003cstrong\u003epassed the burning test\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTimbral characteristics and sound description\u003c\/h3\u003e\n\u003cp\u003eThis Baldwin by RCA pair offers a \u003cstrong\u003ebalanced, transparent\u003c\/strong\u003e and \u003cstrong\u003ehighly consistent\u003c\/strong\u003e sound signature, with a presentation that emphasizes precision, naturalness, and control.\u003c\/p\u003e\n\u003cp\u003eThe Clear Top construction, combined with the long plates, delivers a clean and articulate sound, with a remarkable ability to maintain order and definition even in the most complex passages.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBass\u003c\/strong\u003e\u003cbr\u003eFast and well-controlled, with excellent articulation.\u003cbr\u003eNot intrusive, but always present and functional to the structure of the sound message.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMids\u003c\/strong\u003e\u003cbr\u003eLinear and very legible.\u003cbr\u003eVocals emerge with clarity, maintaining a natural and uncolored rendition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHighs\u003c\/strong\u003e\u003cbr\u003eOpen and clean, with good extension.\u003cbr\u003eNever aggressive, they contribute to an overall sense of air and transparency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDynamics\u003c\/strong\u003e\u003cbr\u003eReactive and precise, with very controlled transient management.\u003cbr\u003eExcellent in both micro and macro dynamics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSoundstage\u003c\/strong\u003e\u003cbr\u003eOrderly and well-focused, with clear instrument separation and a stable soundstage.\u003c\/p\u003e\n\u003ch3\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/h3\u003e\n\u003cp\u003eThis pair is perfectly suited for high-level hi-fi applications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eline preamplifiers\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003ephono stages\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003edrivers and buffers\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe combination of \u003cstrong\u003eprofessional matching\u003c\/strong\u003e, low noise, and operational stability makes it ideal for systems where consistency and quietness are essential.\u003c\/p\u003e\n\u003ch3\u003e🎸 Use in Musical Amplifiers\u003c\/h3\u003e\n\u003cp\u003eIn musical applications, it offers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003every controlled response\u003c\/li\u003e\n\u003cli\u003eexcellent definition even in high-gain contexts\u003c\/li\u003e\n\u003cli\u003epredictable and consistent behavior between tubes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eParticularly suitable for configurations where uniformity between multiple stages is required.\u003c\/p\u003e\n\u003ch3\u003e🎯 Note for audiophiles and technicians\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eBaldwin by RCA – Made in USA (circa 1959)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eClear Top – Long Gray Plates – Side D Getter\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eSame manufacturing batch\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eMatched pair\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eVTT Classification: VERY STRONG\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis pair represents a \u003cstrong\u003ehigh-level solution\u003c\/strong\u003e, designed for those who desire a truly coherent set, carefully selected and ready to be integrated into demanding systems.\u003c\/p\u003e\n\u003cp\u003eIt is not just a simple set of tubes, but a \u003cstrong\u003epair built and verified to work together\u003c\/strong\u003e, offering stability, precision, and reliable sound reproduction over time.\u003c\/p\u003e\n\u003cp\u003eA selection that fully expresses the value of RCA's American production, in the true style of Vacuum Tubes Treasures.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eTest Results:\u003c\/h3\u003e\n\u003cp\u003eTube tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003cbr\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -8.5V\u003cbr\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 2200 ; Ia = 10.5 mA\u003cbr\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube #6:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSection 1: Gm = 2000 ; Ia = 8.8 mA\u003cbr\u003eSection 2: Gm = 1900 ; Ia = 8.2 mA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube #22:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSection 1: Gm = 2000 ; Ia = 9.6 mA\u003cbr\u003eSection 2: Gm = 1900 ; Ia = 8.4 mA\u003c\/p\u003e\n\u003ch3\u003eAdditional Tests Performed:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and compliant for hi-fi use, including phono stages and guitar amplifiers. Also suitable for V1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are coherent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrumental applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage - Tested and working - Supplied in our custom box for optimal protection. \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Perfectly operational.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e Fair – Markings almost completely faded. See photos for details.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eManufacturing Code:\u003c\/strong\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003e undecipherable, identifiable by construction characteristics. Late 1950s\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\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\"\u003eDiscover why our tubes are different →\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":57413701042524,"sku":"03546","price":79.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_e6f04a2a-209e-4fa3-bbb1-676b401aed4a.jpg?v=1776783599","url":"https:\/\/vacuumtubestreasures.com\/en-hr\/products\/12au7-ecc82-baldwin-by-rca-amplitrex-matched-pair-clear-top-long-gray-plates-side-d-getter-tubes-1","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}