{"product_id":"12ay7-rca-nos-nib-gray-plates-o-getter-tested-tubes-made-in-usa-2","title":"12AY7 RCA NOS Gray Plates Halo Getter AMPLITREX Tested Tube MADE IN USA","description":"\u003cp\u003e\u003cstrong\u003e12AY7 RCA NOS Gray Plates Halo Getter AMPLITREX Tested Tube MADE IN USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"119\" data-end=\"524\"\u003eWe offer a \u003cstrong data-start=\"134\" data-end=\"147\"\u003e12AY7 RCA\u003c\/strong\u003e (6072 designation) in \u003cstrong data-start=\"182\" data-end=\"193\"\u003eNOS\u003c\/strong\u003e (\u003cem data-start=\"195\" data-end=\"222\"\u003eNew Old Stock\u003c\/em\u003e) condition, with the classic \u003cstrong data-start=\"250\" data-end=\"265\"\u003egray plates\u003c\/strong\u003e and \u003cstrong data-start=\"268\" data-end=\"280\"\u003ehalo getter\u003c\/strong\u003e construction. Manufactured in the \u003cstrong data-start=\"297\" data-end=\"312\"\u003eUnited States\u003c\/strong\u003e, this tube is \u003cstrong data-start=\"331\" data-end=\"342\"\u003etested\u003c\/strong\u003e and ready for use. It represents the most elegant RCA sound school, with low noise, excellent micro-detail, and a natural musicality that favors long, relaxed listening sessions.\u003c\/p\u003e\n\u003ch3 data-start=\"526\" data-end=\"552\"\u003eSonic Description\u003c\/h3\u003e\n\u003cp data-start=\"553\" data-end=\"1019\"\u003e\u003cstrong data-start=\"553\" data-end=\"563\"\u003eBass:\u003c\/strong\u003e dry and tight, well-controlled; clean and articulated fundamental without bloating.\u003cbr data-start=\"651\" data-end=\"654\"\u003e\u003cstrong data-start=\"654\" data-end=\"663\"\u003eMids:\u003c\/strong\u003e velvety and transparent; credible vocals and acoustic instruments with body and naturalness.\u003cbr data-start=\"749\" data-end=\"752\"\u003e\u003cstrong data-start=\"752\" data-end=\"761\"\u003eHighs:\u003c\/strong\u003e fine and graceful; airy extension without harshness, elegant RCA typical grain.\u003cbr data-start=\"838\" data-end=\"841\"\u003e\u003cstrong data-start=\"841\" data-end=\"854\"\u003eDynamics:\u003c\/strong\u003e fluid and proportionate; legible micro-contrast and controlled transients.\u003cbr data-start=\"930\" data-end=\"933\"\u003e\u003cstrong data-start=\"933\" data-end=\"948\"\u003eSoundstage:\u003c\/strong\u003e orderly and stable scene; good depth and precise central focus.\u003c\/p\u003e\n\u003ch3 data-start=\"1021\" data-end=\"1056\"\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/h3\u003e\n\u003cp data-start=\"1057\" data-end=\"1347\"\u003eThe \u003cstrong data-start=\"1060\" data-end=\"1073\"\u003e12AY7 RCA\u003c\/strong\u003e is recommended for \u003cspan class=\"s1\"\u003e\u003cb\u003einput or driver stages\u003c\/b\u003e\u003c\/span\u003e where perfect balance between sections is not required, and for hi-fi projects seeking \u003cstrong data-start=\"1180\" data-end=\"1229\"\u003etransparency, low noise, and tonal coherence\u003c\/strong\u003e. Excellent as a more \"refined\" alternative to the 12AX7 when lower gain and greater headroom are desired.\u003c\/p\u003e\n\u003ch3 data-start=\"1349\" data-end=\"1387\"\u003e🎸 Use in Musical Amplifiers\u003c\/h3\u003e\n\u003cp data-start=\"1388\" data-end=\"1695\"\u003eHighly appreciated in \u003cstrong data-start=\"1408\" data-end=\"1414\"\u003eV1\u003c\/strong\u003e or the input stages of guitar and microphone amps, where it offers \u003cstrong data-start=\"1488\" data-end=\"1561\"\u003esuperior clean headroom, natural compression, and controlled attack\u003c\/strong\u003e. Perfect for blues, jazz, studio recording, and for those who desire clarity, soft dynamics, and less saturation compared to a 12AX7.\u003c\/p\u003e\n\u003ch3 data-start=\"1697\" data-end=\"1734\"\u003e🎯 Note for Audiophiles and Technicians\u003cstrong data-start=\"1737\" data-end=\"1747\"\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eOriginal \u003cspan class=\"s1\"\u003e\u003cb\u003eNOS RCA\u003c\/b\u003e\u003c\/span\u003e tube, tested and verified, with \u003cspan class=\"s1\"\u003e\u003cb\u003ebalanced sections\u003c\/b\u003e\u003c\/span\u003e. Ideal for those seeking the \u003cspan class=\"s1\"\u003e\u003cb\u003eRCA sound character\u003c\/b\u003e\u003c\/span\u003e in critical positions. A balanced and reliable \u003cstrong data-start=\"2036\" data-end=\"2051\"\u003evintage RCA\u003c\/strong\u003e: the classic American sonic signature, with elegance, order, and naturalness.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eTested on AMPLITREX AT-1000 Tube Tester\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eVa = 250V, Vg = -4V\u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eGm = 1700 ; Ia = 3.0 mA\u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e STRONG\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube \u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 1\u003c\/strong\u003e: Gm = 1500 ; Ia = 2.3 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection 2\u003c\/strong\u003e: Gm = 1510 ; Ia = 2.5 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics and Noise:\u003c\/strong\u003e Low. Tested and suitable for hi-fi use even in phono stages and guitar amplifiers. \u003cstrong\u003eAlso suitable for V1.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e The sections are consistent and well-aligned, making the tube suitable for use as a phase inverter in hi-fi and instrumental applications.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e\u003cspan\u003e NOS - New Old Stock - Tested and working - Supplied in our custom box for optimal protection. \u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003eFully operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCosmetic Condition:\u003c\/strong\u003e\u003cspan\u003e Excellent – Markings excellently preserved, minimal signs of age. See photos for details.\u003c\/span\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e 73-09 → RMA\/EIA Open Date Code → manufactured in the 9th week of 1973\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\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\/p\u003e","brand":"RCA","offers":[{"title":"Default Title","offer_id":42990263140599,"sku":"03555","price":8700.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_040f8910-c58e-4d02-ba49-5af7efe402ce.jpg?v=1777381965","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/12ay7-rca-nos-nib-gray-plates-o-getter-tested-tubes-made-in-usa-2-en","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}