{"product_id":"6aq5-a-el90-rca-black-plate-round-getter-made-in-usa-61","title":"6AQ5 A ( EL90 ) RCA NOS Black Plate Halo Getter Made in USA '61","description":"\u003cp\u003e\u003cstrong\u003e6AQ5A ( EL90 ) RCA NOS Black Plate Halo Getter Made in USA '61\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"317\" data-end=\"831\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e The \u003cstrong data-end=\"240\" data-start=\"220\"\u003eRCA 6AQ5A (EL90)\u003c\/strong\u003e , with \u003cstrong data-end=\"262\" data-start=\"246\"\u003eblack plates\u003c\/strong\u003e and \u003cstrong data-end=\"280\" data-start=\"265\"\u003ehalo getter\u003c\/strong\u003e , produced in the United States in 1961, is a miniature power tube highly prized for its warm musicality and solid construction. In this \u003cstrong data-end=\"471\" data-start=\"448\"\u003eNOS (New Old Stock)\u003c\/strong\u003e version, it represents an authentic example of the great RCA tradition: reliability, tonal balance and a sound with an unmistakable character.\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"732\" data-start=\"653\"\u003e\u003cstrong data-end=\"662\" data-start=\"653\"\u003eBass\u003c\/strong\u003e : compact, fast and well controlled, with a solid and precise base.\u003c\/li\u003e\n\u003cli data-end=\"843\" data-start=\"735\"\u003e\u003cstrong data-end=\"743\" data-start=\"735\"\u003eMids\u003c\/strong\u003e : Warm and natural, with a rich texture that gives body and realism to vocals and acoustic instruments.\u003c\/li\u003e\n\u003cli data-end=\"923\" data-start=\"846\"\u003e\u003cstrong data-end=\"854\" data-start=\"846\"\u003eHighs\u003c\/strong\u003e : sweet and velvety, with balanced and never aggressive brilliance.\u003c\/li\u003e\n\u003cli data-end=\"1015\" data-start=\"926\"\u003e\u003cstrong data-end=\"938\" data-start=\"926\"\u003eDynamics\u003c\/strong\u003e : lively and well-proportioned, with a fluid response even at high volumes.\u003c\/li\u003e\n\u003cli data-end=\"1104\" data-start=\"1018\"\u003e\u003cstrong data-end=\"1032\" data-start=\"1018\"\u003eSoundstage\u003c\/strong\u003e : Coherent and stable, with good depth and natural sound imaging.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2327\" data-end=\"2387\"\u003e🎧\u003cspan\u003e\u0026nbsp;\u003c\/span\u003e\u003cstrong data-start=\"2330\" data-end=\"2387\"\u003eUse in Headphone Amplifiers and Hi-Fi Driver Stages\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2389\" data-end=\"2712\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cmeta charset=\"utf-8\"\u003e Perfect for small hi-fi amplifiers and vintage systems, the 6AQ5A RCA offers transparent and musical performance, faithful to the original design and ideal for those seeking authenticity and naturalness in listening.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"2714\" data-end=\"2762\"\u003e🎸\u003cspan\u003e\u0026nbsp;\u003c\/span\u003e\u003cstrong data-start=\"2717\" data-end=\"2762\"\u003eUse in Guitar and Bass Amplifiers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2764\" data-end=\"3016\"\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003eAlso widely used in small guitar amps from the 50s and 60s, this RCA delivers a creamy, warm, harmonic-rich sound, perfect for blues and classic rock.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"3018\" data-end=\"3244\"\u003e🎯\u003cspan\u003e\u0026nbsp;\u003c\/span\u003e\u003cstrong data-start=\"3021\" data-end=\"3053\"\u003eNote for audiophiles and technicians\u003c\/strong\u003e\u003cbr data-start=\"3053\" data-end=\"3056\"\u003e\u003cmeta charset=\"utf-8\"\u003e The \u003cstrong data-end=\"1643\" data-start=\"1597\"\u003e1961 6AQ5A RCA Black Plate Halo Getter\u003c\/strong\u003e is a rare and sought-after NOS tube, ideal for philological restorations, collections, and high-end audio applications. A true piece of American sonic tradition.\u003cbr\u003e\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 ; Vg2 = 250V ; Vg = -12.5V\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 4.1 ; Ia = 45 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:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm = 4.3 ; Ia = 46 mA\u003c\/p\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 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 NOS - New Old Stock - Tested and working - Supplied 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 Excellent – Excellently preserved lettering, minimal signs of wear. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e MH → two-letter code → production June 1961\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":"RCA","offers":[{"title":"Default Title","offer_id":55550294131036,"sku":"03154","price":1000.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_f50d6455-2cbd-49f4-b29d-bca4d8fdb860.jpg?v=1758699109","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/6aq5-a-el90-rca-black-plate-round-getter-made-in-usa-61","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}