Four Matsushita 12AX7 tubes. TV-7D/U tested strong as shown.
Item Tag: 12AX7
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(2) Sylvania 12AX7A ECC83 Preamp Tubes Gray Plates O Getters Tests NOS Amplitrex
(2) Sylvania 12AX7A ECC83 Preamp Tubes | Gray Plates | O Getters. Tested on an Amplitrex AT1000.
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Matsushita Electric Co. 12AX7 Matching Pair Preamp Tubes ‘Mullard Japan’ 3G
We cannot be responsible for what tubes test in another tester.
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Telefunken 12AX7 Preamp Tubes Vacuum Tube Pair.No original box.
Telefunken 12AX7 Preamp Tubes Vacuum Tube Pair.No original box.
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New In Box Gain & GM Matched Pair Tung-Sol Reissue 12AX7 Preamp Tubes
New In Box Gain & GM Matched Pair Tung-Sol Reissue 12AX7 Preamp Tubes Closely matched for both GAIN & GM. Tubes in test photos is actual tube you will receive. Not just a random tubes pulled from inventory.
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Genuine Replacement Fender Champion 600 Guitar Amp 12AX7 Preamp Vacuum Tube
Fully functioning. Removed from a working Fender Champion 600 amplifier. A perfect replacement for your stock tired tube.
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1 Good Raytheon Black Plate 12AX7 tube #40011
1 Good Raytheon Black Plate 12AX7 tube.This tube test 42-37 where 32 is the minimum good and new tubes test 48 to 50 on are tv7 tube tester.
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Pair of Marconi 12AX7 ECC83 Silver Plate Vacuum Tubes
Scarce pair of Spanish Marconi 12AX7 silver plate tubes. Very similar in construction to the more common Mazda silver plates. Slotted design, disc getters. Test results as shown in the table below from the Amplitrex AT1000.
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(1) NOS Mullard GE 12AX7A ECC83 Tube I63 B1B4 Blackburn UK 1961 Tests NOS TV-7BU
(1) NOS Mullard GE 12AX7A ECC83 Vacuum Tube | Excellent Condition | Blackburn UK Produced 1961 | Factory Date Code I63 B1B4. Tests at 60/54 with 32 being the minimum score for a good tube (with 65% life remaining).