{"product_id":"7025-12ax7-rca-clear-top-long-gray-plates-side-d-getter-tested-tube-made-in-usa-60s-copia","title":"7025 12AX7 RCA Clear Top Long Gray Plates Side D Getter Tested Tube Made in USA '60s","description":"\u003cp\u003e\u003cstrong\u003e7025 12AX7 RCA Clear Top Long Gray Plates Side D Getter Tested Tube Made in USA '60s\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"215\" data-end=\"940\"\u003e\u003cmeta charset=\"utf-8\"\u003e The \u003cstrong data-start=\"270\" data-end=\"292\"\u003e7025 RCA Clear Top\u003c\/strong\u003e , made in the United States in the 1960s and branded for \u003cstrong data-start=\"354\" data-end=\"368\"\u003eTHE FISHER\u003c\/strong\u003e , are one of the most sought-after versions of this preamplifier tube. Featuring \u003cstrong data-start=\"455\" data-end=\"475\"\u003elong gray plates\u003c\/strong\u003e and \u003cstrong data-start=\"478\" data-end=\"495\"\u003ea side D-getter\u003c\/strong\u003e , they are distinguished by their unique “clear top” construction that leaves the internal grille visible, a detail appreciated by collectors and enthusiasts.\u003cbr data-start=\"651\" data-end=\"654\"\u003eOffered as a single configuration, it represents an ideal choice both for those wishing to restore vintage THE FISHER equipment, and for those seeking a carefully selected valve for high-quality hi-fi and musical applications.\u003c\/p\u003e\n\u003cp data-start=\"942\" data-end=\"996\"\u003e\u003cstrong data-start=\"944\" data-end=\"994\"\u003eTimbre characteristics and sound description\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"912\" data-end=\"984\"\u003e\u003cstrong data-start=\"912\" data-end=\"921\"\u003eBass\u003c\/strong\u003e : compact, fast and well defined, with a dry control.\u003c\/li\u003e\n\u003cli data-start=\"987\" data-end=\"1106\"\u003e\u003cstrong data-start=\"987\" data-end=\"995\"\u003eMids\u003c\/strong\u003e : linear and transparent, with the typical RCA timbre that guarantees natural realism and voices rich in presence.\u003c\/li\u003e\n\u003cli data-start=\"1109\" data-end=\"1199\"\u003e\u003cstrong data-start=\"1109\" data-end=\"1117\"\u003eHighs\u003c\/strong\u003e : Clear and bright, with an airy extension that gives freshness and detail.\u003c\/li\u003e\n\u003cli data-start=\"1202\" data-end=\"1307\"\u003e\u003cstrong data-start=\"1202\" data-end=\"1214\"\u003eDynamics\u003c\/strong\u003e : Lively and responsive, with excellent rendition of microdetails and smooth transient response.\u003c\/li\u003e\n\u003cli data-start=\"1310\" data-end=\"1418\"\u003e\u003cstrong data-start=\"1310\" data-end=\"1324\"\u003eSoundstage\u003c\/strong\u003e : Wide and uncluttered, with clear instrument separation and a coherent three-dimensional soundstage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1565\" data-end=\"1886\"\u003e🎧 \u003cstrong data-start=\"1568\" data-end=\"1605\"\u003eUse in Hi-Fi Stereo amplifiers\u003c\/strong\u003e\u003cbr data-start=\"1605\" data-end=\"1608\"\u003e\u003cmeta charset=\"utf-8\"\u003eDesigned as a “low noise” version of the 12AX7, the 7025 RCA Clear Top is ideal for hi-fi preamps and amplifiers, especially vintage \u003cstrong data-start=\"1601\" data-end=\"1615\"\u003eTHE FISHER\u003c\/strong\u003e systems, where it delivers natural timbre, quietness and coherence.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"1888\" data-end=\"2221\"\u003e🎸 \u003cstrong data-start=\"1891\" data-end=\"1924\"\u003eUse in music amplifiers\u003c\/strong\u003e\u003cbr data-start=\"1924\" data-end=\"1927\"\u003e\u003cmeta charset=\"utf-8\"\u003e Also highly regarded by musicians, the 7025 RCA Clear Top offers a crisp, clear sound with controlled harmonic distortion and punchy dynamics. Perfect for guitarists who want a clean, crystal-clear vintage sound.\u003cbr\u003e\u003c\/p\u003e\n\u003cp data-start=\"2223\" data-end=\"2709\"\u003e🎯 \u003cstrong data-start=\"2226\" data-end=\"2264\"\u003eNote for audiophiles and collectors\u003c\/strong\u003e\u003cbr data-start=\"2264\" data-end=\"2267\"\u003e\u003cmeta charset=\"utf-8\"\u003eThe \u003cstrong data-start=\"2090\" data-end=\"2182\"\u003ematched pair of 7025 RCA Clear Top Long Gray Plates Side D Getter branded THE FISHER\u003c\/strong\u003e is a rare and sought-after variant, particularly prized for its transparency, low microphony, and distinctive construction. This tube is highly valuable for philological restorations, collectibles, and high-quality hi-fi systems.\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 ; 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:\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;1700 ; Ia =\u0026nbsp;1.1\u0026nbsp;mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e\u0026nbsp;\u003c\/span\u003eGm =\u003cmeta charset=\"utf-8\"\u003e\u0026nbsp;1800 ; Ia =\u0026nbsp;1.1 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 Low. Tested and approved for use in hi-fi and guitar amplifiers, including V1.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Both sections are balanced, with very close values. Also ideal as a phase inverter.\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 tubes - Tested and in perfect working order. Shipped 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\u003eAesthetic condition:\u003c\/strong\u003e Adequate – Some writing is faded or illegible, overall appearance shows obvious signs of aging. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e not decipherable – RCA USA production, identifiable by its 1960s construction features\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=\"Why our tubes are different – the VTT protocol that improves sound, reliability and durability\" 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":55519874810204,"sku":"03137","price":79.5,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_cd81d1dc-fcef-459e-8cad-df2c761400ec.jpg?v=1758368677","url":"https:\/\/vacuumtubestreasures.com\/en-de\/products\/7025-12ax7-rca-clear-top-long-gray-plates-side-d-getter-tested-tube-made-in-usa-60s-copia","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}