{"product_id":"12ax7a-ecc83-baldwin-raytheon-matched-pair-tubes-long-black-plates-halo-getter-usa-1960s","title":"12AX7A ECC83 Baldwin Raytheon Matched Pair Tubes – Long Black Plates Halo Getter USA 1960s","description":"\u003cp\u003e\u003cstrong\u003e12AX7A ( ECC83 ) Baldwin by RAYTHEON Long Black Plates Halo Getter Matched Pair Tubes Made in USA '60s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSound Description:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"736\" data-start=\"235\"\u003eThe \u003cstrong data-end=\"268\" data-start=\"238\"\u003e12AX7A Baldwin by Raytheon\u003c\/strong\u003e , in this rare 1960s version with \u003cstrong data-end=\"336\" data-start=\"313\"\u003elong black plates\u003c\/strong\u003e and \u003cstrong data-end=\"356\" data-start=\"339\"\u003ehalo getter\u003c\/strong\u003e , offers one of the most natural, transparent, and musically balanced voices of any American valve selected for organ and professional audio use. Labeled \u003cem data-end=\"533\" data-start=\"524\"\u003eBaldwin\u003c\/em\u003e but produced by \u003cstrong data-end=\"561\" data-start=\"549\"\u003eRaytheon\u003c\/strong\u003e to select specifications, these valves were intended for systems where \u003cstrong data-end=\"664\" data-start=\"638\"\u003eelectrical reliability\u003c\/strong\u003e , \u003cstrong data-end=\"689\" data-start=\"666\"\u003elow microphonics\u003c\/strong\u003e , and \u003cstrong data-end=\"713\" data-start=\"692\"\u003euniformity of tone\u003c\/strong\u003e were essential.\u003c\/p\u003e\n\u003cp data-end=\"1010\" data-start=\"738\"\u003eThis \u003cstrong data-end=\"763\" data-start=\"752\"\u003ematched\u003c\/strong\u003e pair stands out for its \u003cstrong data-end=\"812\" data-start=\"790\"\u003eneutral yet dynamic\u003c\/strong\u003e sound, with an \u003cstrong data-end=\"864\" data-start=\"836\"\u003eopen and three-dimensional\u003c\/strong\u003e timbre, ideal for \u003cstrong data-end=\"903\" data-start=\"877\"\u003ehi-fi preamplifiers\u003c\/strong\u003e , \u003cstrong data-end=\"923\" data-start=\"905\"\u003eMM phono stages\u003c\/strong\u003e , or \u003cstrong data-end=\"944\" data-start=\"927\"\u003edriver stages\u003c\/strong\u003e where clarity and coherence between channels are crucial.\u003c\/p\u003e\n\u003cp data-end=\"1207\" data-start=\"1017\"\u003e\u003cstrong data-end=\"1026\" data-start=\"1017\"\u003eBass\u003c\/strong\u003e : defined and dry. The low range is \u003cstrong data-end=\"1090\" data-start=\"1066\"\u003econtained but precise\u003c\/strong\u003e , without exuberance, ideal for systems that favor \u003cstrong data-end=\"1183\" data-start=\"1149\"\u003espeed and harmonic reading\u003c\/strong\u003e of the lower registers.\u003c\/p\u003e\n\u003cp data-end=\"1491\" data-start=\"1209\"\u003e\u003cstrong data-end=\"1217\" data-start=\"1209\"\u003eMids\u003c\/strong\u003e : Natural and articulate. The midrange frequencies are \u003cstrong data-end=\"1292\" data-start=\"1266\"\u003ecentered and transparent\u003c\/strong\u003e , with a \u003cstrong data-end=\"1366\" data-start=\"1307\"\u003every balanced rendition of voices and acoustic instruments\u003c\/strong\u003e . No artificial emphasis: the musicality is \u003cstrong data-end=\"1436\" data-start=\"1412\"\u003esober and controlled\u003c\/strong\u003e , perfect for those seeking neutral and analytical listening.\u003c\/p\u003e\n\u003cp data-end=\"1682\" data-start=\"1493\"\u003e\u003cstrong data-end=\"1501\" data-start=\"1493\"\u003eHighs\u003c\/strong\u003e : Clear and refined. The highs are \u003cstrong data-end=\"1558\" data-start=\"1539\"\u003eextended and airy\u003c\/strong\u003e , yet \u003cstrong data-end=\"1587\" data-start=\"1570\"\u003ewell-integrated\u003c\/strong\u003e , with \u003cstrong data-end=\"1640\" data-start=\"1596\"\u003efine detail and a subtle brilliance\u003c\/strong\u003e that doesn't tire, even at high volumes.\u003c\/p\u003e\n\u003cp data-end=\"1872\" data-start=\"1684\"\u003e\u003cstrong data-end=\"1696\" data-start=\"1684\"\u003eDynamics\u003c\/strong\u003e : responsive and natural. The Raytheon pair reacts \u003cstrong data-end=\"1782\" data-start=\"1749\"\u003every quickly to transients\u003c\/strong\u003e , offering \u003cstrong data-end=\"1830\" data-start=\"1806\"\u003eprogressive and fluid\u003c\/strong\u003e dynamics, without ever becoming nervous or edgy.\u003c\/p\u003e\n\u003cp data-end=\"2051\" data-start=\"1874\"\u003e\u003cstrong data-end=\"1888\" data-start=\"1874\"\u003eSoundstage\u003c\/strong\u003e : open and well-defined. The stereo image is \u003cstrong data-end=\"1963\" data-start=\"1933\"\u003ewide, coherent and orderly\u003c\/strong\u003e , with good \u003cstrong data-end=\"2011\" data-start=\"1979\"\u003eseparation of the sound planes\u003c\/strong\u003e and a \u003cstrong data-end=\"2050\" data-start=\"2018\"\u003erealistic rendering of space\u003c\/strong\u003e .\u003c\/p\u003e\n\u003cp data-end=\"2407\" data-start=\"2058\"\u003e🎧 \u003cstrong data-end=\"2105\" data-start=\"2061\"\u003eUse in Hi-Fi Amplifiers and Phono Stages\u003c\/strong\u003e \u003cbr data-end=\"2108\" data-start=\"2105\"\u003eThis matched pair is ideal for \u003cstrong data-end=\"2169\" data-start=\"2142\"\u003estereo preamplifiers\u003c\/strong\u003e , \u003cstrong data-end=\"2189\" data-start=\"2171\"\u003emoving magnet phono stages\u003c\/strong\u003e , or line-stage sections of high-quality systems. Their \u003cstrong data-end=\"2287\" data-start=\"2250\"\u003eneutral, transparent, and controlled\u003c\/strong\u003e sound makes them perfect for systems where \u003cstrong data-end=\"2349\" data-start=\"2328\"\u003etonal coherence\u003c\/strong\u003e and \u003cstrong data-end=\"2388\" data-start=\"2355\"\u003esoundstage accuracy\u003c\/strong\u003e are critical.\u003c\/p\u003e\n\u003cp data-end=\"2740\" data-start=\"2409\"\u003e🎸 \u003cstrong data-end=\"2457\" data-start=\"2412\"\u003eUse in Guitar and Bass Amplifiers\u003c\/strong\u003e \u003cbr data-end=\"2460\" data-start=\"2457\"\u003eIn guitar preamp circuits, these Raytheons offer a \u003cstrong data-end=\"2546\" data-start=\"2527\"\u003eclean, open\u003c\/strong\u003e sound, with \u003cstrong data-end=\"2573\" data-start=\"2552\"\u003egenerous headroom\u003c\/strong\u003e and \u003cstrong data-end=\"2613\" data-start=\"2580\"\u003egradual harmonic saturation\u003c\/strong\u003e , ideal for \u003cstrong data-end=\"2657\" data-start=\"2626\"\u003ejazz, blues and ambient sounds\u003c\/strong\u003e , or as a first stage in high-end amps for a less compressed, more defined sound.\u003c\/p\u003e\n\u003cp data-end=\"3145\" data-start=\"2742\"\u003e🎯 \u003cstrong data-end=\"2777\" data-start=\"2745\"\u003eNote for audiophiles and technicians\u003c\/strong\u003e \u003cbr data-end=\"2780\" data-start=\"2777\"\u003eA reliable and carefully selected \u003cstrong data-end=\"2806\" data-start=\"2784\"\u003eUSA matched pair\u003c\/strong\u003e , with \u003cstrong data-end=\"2860\" data-start=\"2837\"\u003elong black plates\u003c\/strong\u003e and \u003cstrong data-end=\"2880\" data-start=\"2863\"\u003ehalo getters\u003c\/strong\u003e , capable of offering \u003cstrong data-end=\"2937\" data-start=\"2900\"\u003etransparency, coherence, and detail\u003c\/strong\u003e without artificial coloration. Ideal for both critical hi-fi applications and fine musical instruments. The \u003cem data-end=\"3075\" data-start=\"3066\"\u003eBaldwin\u003c\/em\u003e label certifies their original selection for professional applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eValve tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e \u003cspan\u003eVa = 250V ; Vg = -2V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 1600 ; Ia = 1.2 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 1600\u0026nbsp;; Ia =\u0026nbsp;1.1 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1600 ; Ia =\u0026nbsp;1.1 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eValve 2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1500 ; Ia =\u0026nbsp;0.9 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u0026nbsp;1700 ; Ia =\u0026nbsp;1.2 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e\u003cmeta charset=\"utf-8\"\u003e Low. Tested and approved for use in hi-fi and guitar amplifiers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage - Tested and working - Comes in our custom box for optimal protection.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e Good – Lettering partially eroded, but still legible. Valve body in good condition. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e -\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca rel=\"noopener\" title=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" href=\"https:\/\/vacuumtubestreasures.com\/blogs\/notizie\/perche-le-nostre-valvole-sono-diverse\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"RAYTHEON","offers":[{"title":"Default Title","offer_id":54945060815196,"sku":"03000","price":117.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/3_4fb1ff82-5222-42dc-9f73-151e048f722b.jpg?v=1752067299","url":"https:\/\/vacuumtubestreasures.com\/en-si\/products\/12ax7a-ecc83-baldwin-raytheon-matched-pair-tubes-long-black-plates-halo-getter-usa-1960s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}