{"product_id":"kt88-svetlana-matched-pair-unused-original-boxes-amplitrex-tested-made-in-russia","title":"KT88 SVETLANA Matched Pair Unused Original Boxes AMPLITREX Tested Made in Russia","description":"\u003ch3\u003e\u003cstrong\u003eKT88 SVETLANA – Matched Pair – New \/ Unused – Original Boxes – AMPLITREX Tested – Made in Russia\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eAMPLITREX Matched Pair – VERY STRONG – Unused Tubes from Private Collection – Original Svetlana Boxes\u003c\/strong\u003e\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eTest Results\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eTubes Tested on\u003cstrong\u003e Amplitrex AT-1000 \u003c\/strong\u003eTube Tester:\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVoltage Test:\u003c\/strong\u003e Va = 450V ; Vg2 = 300V ; Vg = -34V\u003cstrong\u003e\u003cbr\u003eAverage 100%:\u003c\/strong\u003e Gm = 6.0 ; Ia = 50 mA\u003cstrong\u003e\u003cbr\u003eTEST RESULT:\u003c\/strong\u003e VERY STRONG\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube #4:\u003c\/strong\u003e  Gm = 5.95 ; Ia = 54.4 mA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube #5:\u003c\/strong\u003e  Gm = 6.05 ; Ia = 53.8 mA\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv\u003e\u003cstrong\u003eAdditional Tests performed:\u003c\/strong\u003e\u003c\/div\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Standard. Tested and suitable for use in hi-fi and guitar amplifiers.\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\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eMatched pair of \u003cstrong\u003eKT88 Svetlana\u003c\/strong\u003e, \u003cstrong\u003eMade in Russia\u003c\/strong\u003e production, with \u003cstrong\u003eSvetlana brown base\u003c\/strong\u003e, selected for hi-fi and musical amplifiers compatible with \u003cstrong\u003eKT88\u003c\/strong\u003e where power, operational stability and consistency between the two output tubes are required.\u003c\/p\u003e\u003cp\u003eThe tubes have never been used, come from a private collection and are supplied in their respective \u003cstrong\u003eoriginal Svetlana boxes\u003c\/strong\u003e. They are not offered as historical NOS, but as \u003cstrong\u003enew \/ unused\u003c\/strong\u003e tubes, tested and selected in our laboratory using the \u003cstrong\u003eAmplitrex AT-1000 Tube Tester\u003c\/strong\u003e.\u003c\/p\u003e\u003cp\u003eThe pair achieved a \u003cstrong\u003eVERY STRONG\u003c\/strong\u003e result, with very consistent values between the two units, stable electrical behavior, good uniformity of anode current and transconductance, no defects detected during testing and suitable matching for compatible push-pull applications.\u003c\/p\u003e\u003cp\u003eFrom a sonic point of view, \u003cstrong\u003eKT88 Svetlana\u003c\/strong\u003e tubes offer a solid, dynamic and well-controlled sound, with authoritative bass, natural mids, clean highs and a good ability to maintain order even at sustained volumes. The overall character is powerful, balanced and musical, suitable for both hi-fi applications and compatible instrument amplifiers.\u003c\/p\u003e\u003cp\u003eRecommended for hi-fi amplifiers, push-pull power amplifiers, integrated amplifiers and musical amplifiers designed for \u003cstrong\u003eKT88\u003c\/strong\u003e, where strong, stable and well-matched output tubes are required.\u003c\/p\u003e\u003cp\u003eA genuinely tested and selected \u003cstrong\u003eKT88 Svetlana Made in Russia\u003c\/strong\u003e pair from Vacuum Tubes Treasures, ideal for those seeking unused, strong and consistent power tubes, supplied in their original boxes.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003e\u003cstrong\u003eConditions:\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Never used, from a private collection and supplied in their original Svetlana boxes. \u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunctionality: \u003c\/strong\u003ePerfectly operational.\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAesthetic condition:\u003c\/strong\u003e\u003cspan\u003e Excellent - 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 not decipherable.\u003c\/li\u003e\n\u003c\/ul\u003e\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":"SVETLANA","offers":[{"title":"Default Title","offer_id":58875994603868,"sku":"03705","price":1289.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/s-l1600_2_192a9d02-c8b3-4ab1-85f7-eb687d9033a8.webp?v=1788106445","url":"https:\/\/vacuumtubestreasures.com\/en-dk\/products\/kt88-svetlana-matched-pair-unused-original-boxes-amplitrex-tested-made-in-russia","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}