Pair 12AX7 ECC83 Electro-Harmonix Tube Tested Audio Amp Preamp Audio Stereo Vintage Radio Vacuum Tube We combine shipping Return Free Take a good look at the pictures as they give a much better description than words can If you have any questions, please ask them before bidding Shipping charge of $5.95 to anywhere within the lower 48 United States Thanks

Set of 2 Electro-Harmonix 12AX7EH tubes/valves, Working EHX. Testing and working fine

- LOT OF 6 -Electro-Harmonix 12AX7EH Vacuum Tubes*** UNTESTED; SOLD AS IS ***Sold as pictured, see photos for condition*** FROM THE ESTATE OF AN AMP REPAIR MAN *** For More Collectibles Visit Our eBay Store! If you have any further questions please feel free to ask! Make sure you check out our other collectibles! Combined shipping discounts! (DOMESTIC ONLY) PAYMENT DUE WITHIN 5 DAYS OR UNPAID ITEM CASE WILL BE OPENED! THANK YOU FOR YOUR PROMPT PAYMENT! ***MICHIGAN RESIDENTS - 6% SALES TAX WILL BE CHARGED*** PLEASE NOTE: SHIPPING CHARGE ONLY COVERS POSTAGE, HANDLING, AND TRACKING NUMBER. IF YOU WOULD LIKE ANY ADDITIONAL USPS SERVICES PLEASE CONTACT US PRIOR TO MAKING PAYMENT SO WE CAN ADJUST THE INVOICE FOR THOSE SERVICES! THANK YOU!

Selling for the estate of a friend. I have no way to test these, but if you have a problem, let me know and Ill take care of it. I wont stick you with tubes that dont work. Tubes will ship in generic tube boxes. Check my other tube listings - additional tubes ship free. 2) Sovtek2) Electro-Harmonix

For your consideration are two Electro Harmonix 12AX7 ECC83 These tubes were tested on a Hickok 539C where the minimum reading is 875gm and the reading for a new tube is 1375gm or better. The tubes tested at 1400gm/1300gm & 1300gm/1300gm

Selling for the estate of a friend. I have no way to test these, but if you have a problem, let me know and Ill take care of it. I wont stick you with tubes that dont work. Tubes will ship in generic tube boxes. Check my other tube listings - additional tubes ship free.

For your consideration are two Electro Harmonix 12AX7 ECC83 These tubes were tested on a Hickok 539C where the minimum reading is 875gm and for a new tube the reading is 1350gm or better. The tubes tested at 1300gm/1400gm & 1300gm/1300gm

One Mesa Boogie 12AX7A preamp tube and one EHX 12AX7EH preamp tube, both in good condition.

One Mesa Boogie 12AX7A preamp tube and one EHX 12AX7EH preamp tube, both in good condition.

Full Valve Set (For Marshall Origin 50), 2 x EL34 & 3 x 12AX7 Electro Harmonix. Just before the invasion of Ukraine sent tube prices soaring, I bought these valves from HotRox in Nottingham. This set has never been used; I bought them as I had the money at the time and wanted a spare set. For sale now as I no longer need them. Electro Harmonix are amongst the best valves out there and Ive used this combination of their tubes in a couple of amps in the past - they are just great! This is a full set of valves for a Marshall Origin 50, or any other amp running a 2 x EL34 power tubes and 3 12AX7 pre-amp tubes. - Matched pair of EL34s - Matched pair of 12AX7s - Single 12AX7 tested for Position 1 / Phase Inverter Checking prices online this morning, this lot would cost about 150 + postage to buy new. You can have my new, slightly older stock set for 99 including shipping (basically, what I paid for the set back in late 2021. Thanks for looking!

One Mesa Boogie 12AX7A preamp tube and one EHX 12AX7EH preamp tube, both in good condition.

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I have 1 Excellent strong Electro harmonix 12ax7 tube .This tube test 49-46 where 32 is the minimum good and new tubes test 48 to 50 on are tv7 tube test

Electro-Harmonix 12AX7EH valve / tube (Uued once for a few seconds).

High gain preamplifier tube with ultra low noise and detailed, musical tone. Unique spiral filament eliminates filament to cathode induced hum common on amplifiers that use AC on the filaments.