{"product_id":"12au7a-ecc82-baldwin-by-raytheon-matched-pair-tubes-long-black-plates-halo-getter-made-in-usa-60s","title":"12AU7A \/ ECC82 Baldwin by RAYTHEON Matched Pair Tubes Long Black Plates Halo Getter Made in USA '60s","description":"\u003ch3 data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003e\u003cspan\u003e12AU7A \/ ECC82 BALDWIN by RAYTHEON – Long Black Plates – Halo Getter – Matched Pair – Made in USA – 1960s\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAMPLITREX Tested – STRONG – Low Noise \u0026amp; Microphonics – Vintage American Raytheon Production\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTest Results\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eTubes tested on \u003cstrong\u003e\u003cspan\u003eAMPLITREX AT-1000\u003c\/span\u003e\u003c\/strong\u003e Tube Tester\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eTest Conditions:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Va = 250V, Vg = -8.5V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003e100% Reference:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gm = 2200; Ia = 10.5 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eTest Result:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSTRONG\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube #1\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eSection 1:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gm = 1800; Ia = 7.4 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eSection 2:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gm = 1800; Ia = 7.4 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube #2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eSection 1:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gm = 1800; Ia = 7.6 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eSection 2:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Gm = 1800; Ia = 7.6 mA\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eAdditional Tests Performed\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eBurn-in \/ Stability Test:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e 48 hours – Passed\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eMicrophonics:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Low. Tested and approved for use in hi-fi equipment, including phono stages and guitar amplifiers. Also suitable for the V1 position.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eSection Balance:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e The sections are consistent and well matched, making the tubes suitable for use as phase inverters in both hi-fi and musical instrument applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eEmission Quality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Strong – Strong and consistent emission, suitable for any compatible application.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eShorts \u0026amp; Gas:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e None detected.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch2\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003ePremium matched pair of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12AU7A \/ ECC82 Baldwin\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tubes manufactured by \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytheon\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e in the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eUnited States\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, dating from the early \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1960s\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The highly sought-after \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLong Black Plates\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e construction with a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eHalo Getter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e identifies one of Raytheon's finest productions of the era, now becoming increasingly difficult to find.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTubes bearing the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBaldwin\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e brand were originally supplied for high-quality professional electronic organs, where reliability, long service life, and quiet operation were essential requirements. Behind the Baldwin label lies genuine American \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytheon\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e production, highly regarded by audiophiles for both its exceptional build quality and outstanding sonic performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe pair has been carefully tested and selected in our laboratory using the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eAmplitrex AT-1000 Tube Tester\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, achieving a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSTRONG\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e classification. Both tubes were selected as \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eLow Noise \u0026amp; Microphonics\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and exhibit excellent electrical balance, making them particularly well suited for high-end audio applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSonically, the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytheon Long Black Plate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e is renowned for its authoritative yet refined presentation, delivering deep, well-controlled bass, a rich and natural midrange, open yet smooth high frequencies, and a spacious, stable, three-dimensional soundstage. These tubes offer exceptional musicality and transparency while preserving the warm tonal character that distinguishes the finest American tubes of the era.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIdeal for hi-fi preamplifiers, driver stages, phase splitters, headphone amplifiers, and all equipment compatible with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12AU7A \/ ECC82\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tubes requiring a premium matched pair.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe tubes are \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eused\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, carefully tested, and fully functional. Cosmetic condition is \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efair\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, with partially faded or difficult-to-read lettering and visible signs of age, none of which affect their electrical performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA rare matched pair of genuine \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytheon Long Black Plate\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tubes, professionally tested and selected by \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eVacuum Tubes Treasures\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, ideal for those seeking one of the most highly regarded American-made \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e12AU7\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e tubes ever produced.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003chr\u003e\u003c\/div\u003e\n\u003ch3\u003e\u003cspan\u003eCondition\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eCondition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Vintage tubes – Tested and fully functional. Supplied in our custom protective boxes.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eFunctionality:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Fully operational.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eCosmetic Condition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Fair – Lettering is partially faded or difficult to read, with visible signs of age. Please refer to the photos for details.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eManufacturing Code:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Not decipherable. Production attributed to the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e1960s\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e based on construction characteristics.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/vacuumtubestreasures.com\/en\/blogs\/news\/perche-le-nostre-valvole-sono-diverse\"\u003e\u003cstrong\u003e\u003cspan\u003eDiscover why our tubes are different →\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"RAYTHEON","offers":[{"title":"Default Title","offer_id":58619393966428,"sku":"03750","price":49.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_63bd5df7-bbc1-4c0e-936b-c54423482dcb.jpg?v=1786461651","url":"https:\/\/vacuumtubestreasures.com\/en-lt\/products\/12au7a-ecc82-baldwin-by-raytheon-matched-pair-tubes-long-black-plates-halo-getter-made-in-usa-60s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}