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You are bidding on 1 New in the Box RCA 5751 (12AX7) twin triode vacuum tube made in the United States of America . This is the upgrade to the 12AX7, and can be used to replace 12ax av at au ay tubes in most guitar amps to get that extra unique tone. RCA triple mica shiny black plate tubes are considered to be among the best 5751 tubes on the market! These are worth double what I am asking. I specialize in hard to find tubes wholesale to the public. (Actual picture). This is a New in the Box New Old Stock Tube with Copper Rods Through Shiny Black Plates, extra heavy support rods and an Angled Rectangle Getter! This is an ULTRA Rare High Quality Tube that was made in 1958! This is a low noise, low microphonics version of the 12ax7, designed for lower gain capabilities. I tested this on my Sencore Mitymite VII to be 120 out of 120. 50-70=questionable 70-100=Acceptable 120 is the highest reading possible! This is tested to be in guaranteed working condition If you have any questions or comments contact me on E-bay Presence01 Returns accepted only if not as described, see details below. Check out my other items! Be sure to add me to your favorites list! Be sure to check out my other auctions of rare 40's 50's & 60's 12ax7, 12ax7a, 5751, 7025, 6L6, 5U4, 2A3, 421A, 422A, 6BQ5, 5R4, 5AR4, 822a, and much more RCA, Sylvania, Raytheon, CBS Hytron, Bendix, Amperex, Mullard, Telefunken!
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