Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Two Raytheon 12AX7 tubes. triode #1 = 1200 micromhos @. 9mA plate current emissions / 92.2 Mu gain. Triode #2 = 1200 micromhos @. 7mA plate current emissions / 92.2 Mu gain.
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See photos comes as is no returns
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Tested on Amplitrex AT-1000 tube tester (fixed bias mode). Two Ei 12AX7 tubes. they do test low.
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One pair of Mullard 12AX7/12AX7A tubes, made for Fleetwood and Knight (Kit). Rates dependent on the country of origin. U.S. origin has no tariff to the States.
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Type 12AX7A (ECC83) vacuum tube. (Triode#1 / Triode#2). Hickok TV-7B/U tested. Hickok TV-7B/U is a mutual conductance (Gm) type tube tester. One tube,circa 1960s ,USA madeby RCA. Tube features gray-Ladder-plates and a 'Halo-Ring' getter on top.
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Reference tube is tested first then the tube listed for sale.
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FOR SALE 2 AMPEREX 12AU7A NEW NOS TUBES.
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