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  1. 12AX7A/ECC83 Siemens Red Tip MaxiPreamp2/TV7 tested (1) tube lot

    I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.

    eBay

  2. (2) Raytheon 12AX7A Japan Preamp Tubes Pair (TESTED W/ TV-7D/U)

    eBay

  3. NOS Matched Pair RCA 12AX7A ECC83 12AX7 phono Grade Audio Tubes Old MusicalGlass

    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.

    eBay

  4. 12AX7A/ECC83 Tungsram "Delta" MaxiPreamp2/TV7 Tested (1)Tube Lot

    I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.

    eBay

  5. Sleeve of 5 NOS EI 12AX7A ECC83 Audio Amplifier Tubes Made in Yugoslavia 12AX7

    It may or may not work at all when you get it!

    eBay

  6. REAL TUBE 12 Ax7A TUBE OVERDRIVE TUBE WORKS USA BLACK/YELLOW VINTAGE

    It features a real 12AX7 preamp tube inside, making it one of the first tube-based pedals. It also features a soft button switch for bypass. The Real Tube Overdrive is known for its creamy overdrive sounds and has been used by famous guitarists.

    eBay

  7. 12AX7A/ECC83 Siemens Red Tip MaxiPreamp2/TV7 Tested (1)Tube Lot

    I test all tubes thoroughly and with great care. I test to the best of my ability, and I report all results honestly.

    eBay

  8. NOS Ei For National/12AX7A/LONG SMOOTH PLATES/O GETTER/HIGH GAIN/MAXI TESTED

    NOS Ei For National/12AX7A/LONG SMOOTH PLATES/O GETTER/HIGH GM/MAXI TEST

    eBay

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