I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.
Item Category: Vintage Electronics
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NEW 12AX7 / 7025 vacuum tubes, LOW NOISE, Electro Harmonix
In all samples tested, noise and microphonics could not be detected.
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NOS Matched Pair RCA 12AX7A ECC83 12AX7 phono Grade Audio Tubes
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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12AX7A/ECC83 Tungsram “Penta Lab” NOS/NIB MaxiPreamp2/TV7 tested
I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly. See Photos for test results.
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General Electric 12AX7 Vacuum Tube Ex. Made in Usa
General Electric 12AX7 Vacuum Tube Ex. Made in Usa . Condition is New. Shipped with USPS Ground Advantage.
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***L@@K***Matched Pair Magnavox 12AX7 JAPAN HIFI TUBES Tested ***MAKE OFFER***
Almost all the paint is gone, but these have been Hickok 6000 tested AND they have been tested in a Fisher Phono Preamp for hum, noise, microphonics and overall tone. These are very nice tubes. They made “Neighbor” By Ugly Kid Joe sound awesome! The Mc225 and the Altec 604c’s help a lot. The prettiest girls don’t need makeup.
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Matched Pair Telefunken 12AX7 Smooth Plate Tubes TV7 Tested NOS Worn Labels
Both tested NOS matched on a professionally calibrated TV7B/U tube tester with the following results (32 is minimum): Tube 1- 54/54 Tube 2- 56/56
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(2) Sylvania JAN-12AX7WA Mil Spec Tubes Gray Plate O Getters Tests Strong TV-7BU
(2) Sylvania JAN-12AX7WA Military Spec Preamp Tubes | Gray Plates | O Getters. Tube 1 tests at 52/54 and tube 2 at 46/50 with 32 being the minimum score for a good tube (with 65% life remaining).