RCA 12AU7A Clear Top. Balanced Twin Triode Tubes. Matched Pair NIB. These both test 90/90 on my IT-17 tester, where new tubes usually test 85/85. Both have AC Date Codes.
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GREY PLATE, SQUARE GETTER. TESTED NEW AND UNUSED.
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You will receive 2 pieces of ECC82 12AU7 RCA clear top side getter. Made in the USA, testing NOS and supplied in white boxes. Our usual tube tester is the AVO VCM163. One of the best testers in the world.
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Matched Pair 12AU7 ECC82 Long Grey Plate SQR. Getter NOS RCA USA Valve Tubes (AAV11).
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RCA 12AU7 1950 long black plate, D Getter, nickel rod. One tube has very little print left, the other is reasonable and the year is legible. NOS=10.5 - 2.2. 11.9 - 2.1 / 9.8 - 2.0.
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NOS tubes fall within the Gm characteristic range of an average tube, as published in the RCA RECEIVING TUBE MANUAL, which states "Individual tubes, like any manufactured product, may have characteristics that range above or below the values given.
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Silver Gradetubes are matched within15%, Gold Gradetubes are matched within10% and Platinum Plus 1%.
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