{"product_id":"6189-12au7wa-e82cc-ge-triple-mica-gray-plates-balanced-made-in-usa","title":"6189 \/ 12AU7WA \/ E82CC GE Triple Mica Gray Plates Balanced Made in USA","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cstrong\u003e6189 \/ 12AU7WA \/ E82CC GE Triple Mica Gray Plates Halo Getter Made in USA\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUltra Low Noise \u0026amp; Microphonics – VERY STRONG - Balanced Sections - Vintage General Electric Production\u003c\/strong\u003e\u003c\/p\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\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\u003e\u003cstrong\u003eTube :\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSection 1:\u003c\/strong\u003e Gm = 2100 ; Ia = 9.4 mA\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eSection 2:\u003c\/strong\u003e Gm = 2100 ; Ia = 9.2 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\u003cstrong\u003eBurn-in \/ Stability Test:\u003c\/strong\u003e 48h – OK\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMicrophonics:\u003c\/strong\u003e Very Low. Tested and suitable for use in hi-fi equipment and guitar amplifiers, even in the most sensitive audio stages.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eNoise: \u003c\/strong\u003eLow and well controlled. Quiet operation in hi-fi and musical amplifiers in the intended positions.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBalance:\u003c\/strong\u003e Excellent - Sections are consistent and well aligned, making the tube suitable for use as a phase inverter in hi-fi and instrumental applications.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEmission Quality:\u003c\/strong\u003e Excellent – Very strong and stable emission, without fluctuations.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eShorts and GAS:\u003c\/strong\u003e Absent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePrecious \u003cstrong\u003e6189 \/ 12AU7WA \/ E82CC General Electric\u003c\/strong\u003e, authentic vintage American production \u003cstrong\u003eMade in USA\u003c\/strong\u003e, characterized by robust \u003cstrong\u003eTriple Mica, Gray Plates and Halo Getter\u003c\/strong\u003e construction. The 6189 represents the professional and high-reliability version of the 12AU7\/ECC82 family, particularly interesting for audio applications where stability, structural solidity, and low noise play a fundamental role.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eTriple Mica\u003c\/strong\u003e structure increases the mechanical rigidity of the internal assembly and makes this construction particularly suitable for the most demanding applications. Based on the construction characteristics, production is attributable to the \u003cstrong\u003elate 1950s \/ early 1960s\u003c\/strong\u003e, a particularly appreciated period of \u003cstrong\u003eGeneral Electric Made in USA\u003c\/strong\u003e production.\u003c\/p\u003e\n\u003cp\u003eThe tube has been carefully tested using the \u003cstrong\u003eAmplitrex AT-1000 Tube Tester\u003c\/strong\u003e, achieving a \u003cstrong\u003eVERY STRONG\u003c\/strong\u003e classification. Both sections measure exactly \u003cstrong\u003eGm 2100\u003c\/strong\u003e, with anode currents of \u003cstrong\u003e9.4 and 9.2 mA\u003c\/strong\u003e: extremely homogeneous values, very close to the nominal reference and indicative of excellent \u003cstrong\u003ebalance between the two triodes\u003c\/strong\u003e. The emission is very strong, stable and free of fluctuations, with no shorts, gas, or anomalies detected.\u003c\/p\u003e\n\u003cp\u003eThis specimen has also been selected for \u003cstrong\u003eUltra Low Noise \u0026amp; Microphonics\u003c\/strong\u003e, with particularly low and well-controlled noise. It is therefore a choice of particular interest also for the \u003cstrong\u003emost sensitive audio stages\u003c\/strong\u003e, including \u003cstrong\u003eV1, preamplifiers and compatible phono stages\u003c\/strong\u003e, as well as for instrumental amplification. The excellent match between the two sections also makes it particularly suitable as a \u003cstrong\u003ephase inverter\u003c\/strong\u003e in compatible hi-fi and musical applications.\u003c\/p\u003e","brand":"GE","offers":[{"title":"Default Title","offer_id":59050265674076,"sku":"03790Q","price":657.0,"currency_code":"NOK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0616\/3775\/5127\/files\/2_45ac49d3-78e2-48c0-b2fb-1243825a9dbc.jpg?v=1788853902","url":"https:\/\/vacuumtubestreasures.com\/en-no\/products\/6189-12au7wa-e82cc-ge-triple-mica-gray-plates-balanced-made-in-usa","provider":"Vacuum Tubes Treasures","version":"1.0","type":"link"}