{"product_id":"12av7-nos-nib-sylvania-black-wing-plates-square-getter-tested-tube-made-in-usa-50s-copia","title":"12AV7 NOS NIB Tung-Sol Tested Tube – Gray Wing Plates Horseshoe Getter USA 1950s","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e12AV7 NOS NIB TUNG-SOL Gray Wing Plates Horse Shoe Getter Tested Tube\u003c\/strong\u003e\u003cbr\u003e \u003cstrong\u003eMade in USA '50s\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e These tubes, manufactured in the United States in the 1950s, offer a unique combination of musicality and detail. They are known for their balanced and dynamic sound, with a well-articulated midrange and a characteristic Tung-Sol tone. The gray \"wing\"-shaped plates provide a clear and open sound, perfect for those seeking transparency and naturalness in music reproduction.\u003c\/p\u003e\n\u003cp\u003e The bass is tight and well-defined, providing a solid foundation without overwhelming the soundstage. The midrange stands out for its presence and warmth, with a natural and fluid vocal reproduction, ideal for accurately reproducing voices and acoustic instruments. The high frequencies are particularly sweet and transparent, without ever becoming intrusive or fatiguing, ensuring pleasant prolonged listening.\u003c\/p\u003e\n\u003cp\u003e These tubes excel at creating a wide and detailed soundstage, with remarkable instrument separation that allows you to pick out every detail in the recording. Compared to Sylvanias from the same period, Tung-Sol tubes offer greater precision and a slightly livelier sound, while retaining the warm, enveloping character typical of vintage tubes. Ideal for those seeking a refined sound with a touch of liveliness and dynamics.\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eProduced by TUNG-SOL - USA.\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e Tested on \u003cstrong\u003eAMPLITREX AT-1000\u003c\/strong\u003e Tube tester:\u003cbr\u003e \u003cspan\u003eVoltage Test: Va = 150V, Vg = -1V\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003eAverage 100% Gm = 8.5 ; Ia = 18 mA\u003c\/span\u003e\u003cbr\u003e \u003cstrong\u003eTEST RESULT: VERY STRONG\u003c\/strong\u003e\u003cbr\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e Section 1: Gm = 10.5 ; Ia = 23 mA\u003cbr\u003e Section 2: Gm = 10.3 ; Ia = 23 mA\u003c\/p\u003e\n\u003cp\u003e \u003cspan\u003eFurther tests performed:\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003eMicrophone Test\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003eEmission Quality\u003c\/span\u003e\u003cbr\u003e \u003cspan\u003eShort Circuit Test\u003c\/span\u003e\u003cbr\u003e GAS Test\u003cspan\u003e\u003c\/span\u003e\u003c\/p\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\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eFind out why our valves are different →\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"TUNG-SOL","offers":[{"title":"Default Title","offer_id":49486077985116,"sku":"02471R","price":2000.0,"currency_code":"ALL","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/1_015c2cb6-1f09-4dd4-ae15-d5a0b3c346e0.jpg?v=1728119965","url":"https:\/\/vacuumtubestreasures.com\/en-al\/products\/12av7-nos-nib-sylvania-black-wing-plates-square-getter-tested-tube-made-in-usa-50s-copia","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}