Triple Platinum Matched on Amplitrex AT1000. Amplitrex AT1000 Test Results 90%+ GM = Within NOS Specs 90%+ EM = Within NOS Specs. All tubes are tested with the Audiophile in mind for SHORTS, GAS, MUTUAL CONDUCTANCE and NOISE (large tube lots are not tested for noise).
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NOS ON Tv7. 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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These are new production by New Sensor. We were shocked at how good these re-issues are. Try them in your classic guitar amplifier as well, for that thick 60s sound with fast attack and decay. Does it approach the original Mullard in sound?.
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Construction: short gray plate ring getter copper rods. Tested at: 71/79 plate current 7.9/8.2. The minimum is equal to 65% of the life of the tube. Glass: clear. Tested for shorts and gas. Date codes 912 0-26.
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Long Black Plates, Square Getter. RCA, Made in USA. ECC83 12AX7A Valve Tube. Fully Tested on AVO VCM 163.
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One pair of 12AX7A (ECC83) tubes by Sylvania (USA). Most of my tubes were U.S. made.
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1 X 12AX7A TUBE. MADE IN HOLLAND. TESTED IN AMPLITREX AT1000 TUBE TESTER.
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Tubes are matched for gm to 10% or better on am Ampltrex Tester. The Tung-Sol ECC803S 12AX7A has high gain, ultra low microphonics and superb linearity. The sound of this tube is full and musical.
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