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  1. 12AX7A Tungsram National NOS/NIB TV7 Tested Very Strong Balanced One (1) Tube

    This one tests very strong. Minimum good is 32.

    eBay

  2. Valve JCK 12AX7A 7025 ECC83 AF Double Triode High Audio Amplifier 6.3v 0.3A . V2

    This tube is in perfect new condition. This tube is new. WE HAVE NO FACILITIES FOR COLLECTION.

    eBay

  3. RFT TELAM 12AX7A Tube NOS NIB RCA Branded POLAND RARE Amplitrex Tested

    This beautiful tube is NOS and tests new on my Amplitrex AT1000. Test results are in pictures.

    eBay

  4. 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.

    eBay

  5. PAIR OF VINTAGE RCA 12AX7A ECC83 PREAMP TUBES - TESTED VG - MADE IN USA

    eBay

  6. NEW 2pcs ECC83 MATCHED PAIR Tungsram Tube NOS 7025 12AX7 6681 12AX7A

    Up for sale 2pcs ECC83 Tungsram tubes. MATCHED PAIR - tubes has identical electrical characteristics. Accuracy of selection is pair 5%. Tubes new, never been in using. 2 tubes in 1 lot.

    eBay

  7. NOS ECC83 Amperex Heerlan Holland Huge Halo Musical Short Plates Quiet 12AX7A

    NOS is subject to interpretation and there is no specific definition for it either. There are suggestions and opinions. special checking. This test needs sound amplification; hearing listening to noise with headphones would indicate a real disaster inside a tube (THE shorts test WOULD already BE evidence OF THIS).

    eBay

  8. Matched PAIR SYLVANIA 12AX7A ECC83 AUDIO VACUUM TUBES TESTED D.10130.C

    PAIR SYLVANIA 12AX7A REPRODUCTION BOXES INCLUDED MADE IN THE USA VINTAGE STOCK GREY PLATES HALO GETTER MINIATURE TUBES TESTED ON HICKOK TV7 RESULTS= 45/43 AND 44/43 MINIMUM= 32/32

    eBay

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