{"product_id":"7025-12ax7-rca-short-gray-plates-halo-getter-tested-tube-made-in-usa-60s","title":"7025 \/ 12AX7 RCA Short Gray Plates Halo Getter Tested Tube Made in USA '60s","description":"\u003cp\u003e\u003cstrong\u003e7025 \/ 12AX7 RCA Short Gray Plates Halo Getter Tested Tube Made in USA '60s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAMPLITREX Tested - Ultra Low Noise \u0026amp; Microphonics - Vintage American RCA Production\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003e7025 RCA\u003c\/b\u003e\u003c\/span\u003e represents the premium, low-noise version of the renowned American 12AX7\/ECC83. Developed for professional, hi-fi, and high-quality electronic instrumentation applications, the 7025 was intended for contexts where quietness, reliability, and operational stability were fundamental requirements.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis example is an authentic \u003cspan class=\"s1\"\u003e\u003cb\u003eRCA Made in USA\u003c\/b\u003e\u003c\/span\u003e production from the 1960s, characterized by the classic construction with \u003cspan class=\"s1\"\u003e\u003cb\u003eShort Gray Plates\u003c\/b\u003e\u003c\/span\u003e and \u003cspan class=\"s1\"\u003e\u003cb\u003eHalo Getter\u003c\/b\u003e\u003c\/span\u003e, a configuration particularly appreciated for its tonal balance, natural reproduction, and long operational life.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe best RCA 7025s are considered among the most musical and versatile American tubes ever produced, capable of offering a rich, detailed, and engaging sound without artificial emphasis.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis tube has been carefully verified using \u003cspan class=\"s1\"\u003e\u003cb\u003eAMPLITREX AT-1000\u003c\/b\u003e\u003c\/span\u003e, proving to be \u003cspan class=\"s1\"\u003e\u003cb\u003eSTRONG\u003c\/b\u003e\u003c\/span\u003e, stable, and particularly quiet.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eUltra Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e selection also makes it particularly interesting for the most critical applications.\u003c\/p\u003e\n\u003ch3 data-start=\"942\" data-end=\"996\"\u003e\u003cstrong data-start=\"944\" data-end=\"994\"\u003eTonal Characteristics and Sound Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThe RCA 7025 Short Gray Plates offer a balanced, refined, and pleasantly natural musical presentation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eBass\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eControlled and well-articulated bass, with excellent definition and a good sense of rhythm. The low end is present without becoming intrusive.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eMids\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe midrange is warm, credible, and harmonically rich. Vocals are reproduced with great naturalness and excellent intelligibility.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eHighs\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe highs are open and well-extended, with refined and never aggressive detail. Environmental information emerges with fluidity and naturalness.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eDynamics\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe dynamic response is prompt and musical, capable of precisely following variations in the recording.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003cb\u003eSoundstage\u003c\/b\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"p3\"\u003eThe soundstage is well-organized, with good depth perception and correct instrument placement.\u003c\/p\u003e\n\u003ch3 data-start=\"1565\" data-end=\"1886\"\u003e🎧 \u003cstrong data-start=\"1568\" data-end=\"1605\"\u003eUse in Hi-Fi Stereo Amplifiers\u003c\/strong\u003e\n\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eThis 7025 RCA is particularly suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eTube preamplifiers\u003c\/li\u003e\n\n\u003cli\u003eIntegrated hi-fi amplifiers\u003c\/li\u003e\n\n\u003cli\u003eMM and MC phono stages\u003c\/li\u003e\n\n\u003cli\u003eTube DACs\u003c\/li\u003e\n\n\u003cli\u003eBuffers and line stages\u003c\/li\u003e\n\n\u003cli\u003eRestoration of vintage American electronics\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p3\"\u003eThe \u003cspan class=\"s1\"\u003e\u003cb\u003eUltra Low Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e classification also makes it particularly suitable for the most sensitive positions in the circuit.\u003c\/p\u003e\n\u003ch3 data-start=\"1888\" data-end=\"2221\"\u003e🎸 \u003cstrong data-start=\"1891\" data-end=\"1924\"\u003eUse in Musical Amplifiers\u003c\/strong\u003e\n\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eRCA 7025s are also highly appreciated by musicians for their balanced and musical character.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThey offer:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eExcellent note intelligibility\u003c\/li\u003e\n\n\u003cli\u003eRich and harmonic midrange\u003c\/li\u003e\n\n\u003cli\u003eLow background noise\u003c\/li\u003e\n\n\u003cli\u003eNatural and progressive response\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003eParticularly interesting in the \u003cspan class=\"s1\"\u003e\u003cb\u003eV1\u003c\/b\u003e\u003c\/span\u003e position and in amplifiers that require a quiet and musical tube.\u003c\/p\u003e\n\u003ch3 data-start=\"2223\" data-end=\"2709\"\u003e🎯 \u003cstrong data-start=\"2226\" data-end=\"2264\"\u003eNote for Audiophiles and Collectors\u003c\/strong\u003e\n\n\u003c\/h3\u003e\n\u003cp class=\"p1\"\u003eGenuine \u003cspan class=\"s1\"\u003e\u003cb\u003eRCA 7025 Made in USA\u003c\/b\u003e\u003c\/span\u003e represent one of the most sought-after versions of the American 12AX7 family.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003eThe combination of:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eOriginal USA RCA production\u003c\/li\u003e\n\n\u003cli\u003eShort Gray Plates\u003c\/li\u003e\n\n\u003cli\u003eHalo Getter\u003c\/li\u003e\n\n\u003cli\u003eUltra Low Noise \u0026amp; Microphonics selection\u003c\/li\u003e\n\n\u003cli\u003eSTRONG performance\u003c\/li\u003e\n\n\u003cli\u003e1960s vintage construction\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp class=\"p4\"\u003emakes this example particularly interesting for both quality audio use and collecting.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eTube tested on \u003cstrong\u003eAMPLITREX AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e\u003cspan\u003e Va = 250V ; Vg = -2V\u003c\/span\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1600 ; Ia = 1.2 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eTest Result:\u003c\/strong\u003e STRONG\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTube :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 1:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = 1500 ; Ia = 0.9 mA\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSection 2:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGm = \u003cmeta charset=\"utf-8\"\u003e1300 ; Ia = 0.7 mA\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cul\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Very Low. Tested and compliant for use in hi-fi and guitar amplifiers, including V1.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Good. The sections exhibit consistent balance, fully compatible with use in hi-fi and musical amplifiers, in all applications where absolute symmetry between sections is not required.\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Good Emission – Good and regular emission, suitable for any application\u003c\/span\u003e\u003c\/li\u003e\n\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/span\u003e\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Vintage Tubes - Tested and perfectly working. Supplied in our custom box for optimal protection.  \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e Adequate – Writings partly faded or illegible, general aesthetics with evident signs of age. See photos for details.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eManufacturing Code: \u003c\/strong\u003enot decipherable – RCA USA production, identifiable by 1960s construction characteristics\u003cstrong\u003e\u003c\/strong\u003e\n\n\u003c\/li\u003e\n\n\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":57802779623772,"sku":"03638T","price":457.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_23d73de1-678e-4025-8ddb-7d40ed8fd9b3.jpg?v=1780675061","url":"https:\/\/vacuumtubestreasures.com\/en-dk\/products\/7025-12ax7-rca-short-gray-plates-halo-getter-tested-tube-made-in-usa-60s","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}