{"product_id":"12au7-ecc82-nos-telefunken-matched-pair-smooth-plates-diamond-bottom-tubes-made-in-w-germany","title":"12AU7 \/ ECC82 TELEFUNKEN NOS Matched Pair - Smooth Plates - Made in West Germany","description":"\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003e12AU7 ECC82 NOS TELEFUNKEN Matched Pair Smooth Plates Tubes Made in W. Germany\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eThis \u003cspan class=\"s1\"\u003e\u003cb\u003ematched pair of 12AU7 \/ ECC82 TELEFUNKEN NOS\u003c\/b\u003e\u003c\/span\u003e , produced in \u003cspan class=\"s1\"\u003e\u003cb\u003eWest Germany\u003c\/b\u003e\u003c\/span\u003e , represents one of the most authoritative expressions of the German construction school.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003e\u003cmeta charset=\"utf-8\"\u003e One tube has a clearly visible Diamond Bottom; on the other the imprint is very light. The smooth-plate internal structure and manufacturing codes are, however, fully consistent with original Telefunken production from Berlin.\u003cbr\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eThe tubes are \u003cspan class=\"s1\"\u003e\u003cb\u003eauthentic NOS (New Old Stock)\u003c\/b\u003e\u003c\/span\u003e , selected and matched in our laboratory, with tests performed on \u003cspan class=\"s1\"\u003e\u003cb\u003eAmplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e .\u003c\/p\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eRated \u003cspan class=\"s1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/span\u003e , they are also suitable for sensitive circuit positions.\u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cstrong\u003eSound Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eBass:\u003c\/strong\u003e Controlled, linear, and well-structured. The low range is precise and never intrusive, with excellent articulation and rhythmic coherence.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eMids:\u003c\/strong\u003e Neutral, refined, and highly transparent. Voices emerge naturally and cleanly, without any pronounced coloration. Acoustic instruments and strings are defined and harmonically complete.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eHighs:\u003c\/strong\u003e Extended, airy, and finely detailed. The upper end is clean and well-controlled, with a fine texture that favors prolonged listening even on high-resolution systems.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eDynamics:\u003c\/strong\u003e Balanced and composed. Excellent microdynamics and linear transient response, with consistently predictable and consistent behavior.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eSoundstage:\u003c\/strong\u003e Stable, well-organized, and three-dimensional soundstage. Precise separation of sound planes and sharp focus of the central image.\u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cb\u003e🎧 Use in Hi-Fi Amplifiers\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eIdeal for:\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli class=\"p1\"\u003emedium-high and high quality line preamplifiers\u003c\/li\u003e\n\u003cli class=\"p1\"\u003edriver stages and phase inverters\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eintegrated amplifiers and power amplifiers that require stability and silence\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eParticularly suitable for systems oriented towards transparency, neutrality and timbral correctness.\u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cb\u003e🎸 Use in Music Applications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eAlso appreciated in:\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli class=\"p1\"\u003einstrument amplifiers\u003c\/li\u003e\n\u003cli class=\"p1\"\u003estudio equipment\u003c\/li\u003e\n\u003cli class=\"p1\"\u003esensitive entry positions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\" class=\"p1\"\u003eThey offer clarity, control and balanced harmonic response, while maintaining silence and operational stability.\u003c\/p\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cstrong\u003e🎯 Note for audiophiles and technicians\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli class=\"p1\"\u003e\u003cspan class=\"s1\"\u003eOriginal Telefunken production\u003c\/span\u003e \u003cb\u003e– Made in W. Germany\u003c\/b\u003e\u003cbr\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eSmooth Plates\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eNOS – New Old Stock\u003c\/li\u003e\n\u003cli class=\"p1\"\u003e\u003cb\u003eLow Noise \u0026amp; Microphonics\u003c\/b\u003e\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eTested and matched on \u003cspan class=\"s1\"\u003e\u003cb\u003eAmplitrex AT-1000\u003c\/b\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\" class=\"p3\"\u003eA pair that embodies the Telefunken character: precision, balance, and consistency over time. Designed for those seeking a technically solid, musically neutral, and historically significant 12AU7, in true Vacuum Tubes Treasures style.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cstrong\u003eTest Results:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eValve tested on AMPLITREX AT-1000 Tube Tester:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cstrong\u003eTest Conditions:\u003c\/strong\u003e Va = 250V, Vg = -8.5V\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAverage 100%:\u003c\/strong\u003e Gm = 2200 ; Ia = 10.5 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTest Result:\u003c\/strong\u003e VERY STRONG\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eValve #1:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2100 ; Ia = 10.0 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2000 ; Ia = 8.6 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eValve #2:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2000 ; Ia = 8.6 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2000 ; Ia = 8.2 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eAdditional Tests Performed:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Low. Tested and approved for use in hi-fi, including phono stages and guitar amplifiers. Also suitable for V1.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOutput Quality:\u003c\/strong\u003e Excellent – Very strong and stable output, no fluctuations.\u003cbr\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eShort circuits and GAS:\u003c\/strong\u003e Absent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"text-align: left;\"\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e NOS - New Old Stock - Tested and in perfect working order. Comes in our custom box for optimal protection.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Fully functional.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCosmetic condition:\u003c\/strong\u003e Good – Labeling partially eroded, but still legible. Tube body in good condition. One tube has a clearly visible Diamond Bottom; on the other, the imprint is very light. The smooth-plate internal structure and manufacturing codes are, however, fully consistent with original Telefunken production from Berlin. See photos for details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003e\u003cstrong\u003eManufacturing Code:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"text-align: left;\"\u003e\n\u003cli\u003eB1203527 - B → Berlin plant - 1 \/ 2 → day of production (12) - 0 → tenth of the month - 3 → last digit of the year (1963) - 5 → last digit of the month - 27 → internal serial \/ batch number\u003c\/li\u003e\n\u003cli\u003eB fr 27 → B → Berlin - fr → December 1968 - 27 → Internal serial number\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003eThe codes indicate distinct production batches, while maintaining the same smooth-plate internal structure and authentic diamond bottom. Both tubes feature consistent construction and characteristics typical of Telefunken West Germany production.\u003c\/p\u003e\n\u003cp style=\"text-align: left;\"\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\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"TELEFUNKEN","offers":[{"title":"Default Title","offer_id":56800535740764,"sku":"03437","price":393.0,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_82c11529-e44a-487c-a8f6-57f95506e863.jpg?v=1771840858","url":"https:\/\/vacuumtubestreasures.com\/en-ca\/products\/12au7-ecc82-nos-telefunken-matched-pair-smooth-plates-diamond-bottom-tubes-made-in-w-germany","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}