Up for sale is an International Servicemaster 12AX7A/ECC83 Vacuum Tube. (Minimum is 32 for 12AX7a). I tested tubes on my TV7B/U tube tester. Date Code : 922-84. What you see is exactly what you get.
NOS International Servicemaster 12AX7A/ECC83 Vacuum Tube : Yugoslavia
Tests strong 61/63, min 32. For my tubes: I am using a restored and calibrated TV-7/U tester. I am listing tons of tubes and am happy to make a deal if you want more than one. If you’re looking for a few tubes you don’t see I can take a look at what I have and try to accommodate. Feel free to take a look at my other listings and reach out if you have any questions before you purchase. I take pride in being a strong communicator and a fair seller. I don’t guarantee these results will match your tester specifically but I am competent and experienced with my tester and this has led to positive feedback for a while now. I will ship promptly and package properly. Thanks for your business!
Admiral Labeled 12AX7A Tube Made In France Tests Good Vintage RT Mazda ECC83
As pictured
Sovtek 12ax7A/7025 Short plate round Solid getter 110/100 each side
The pictures shows a Sovtek 12ax7A/7025 Short plate round Solid getter 110/100 each side. Preamp Tube. Tube Tester Scale reads. So, for example. — George Kostyrko. As many of you know, due to the conflict in Ukraine and various economic sanctions.
Marshall silver plate ECC83 12AX7A VLVE-900 tests NOS new and balanced
NOS Raytheon USA BLACK Ribbed Plate 12AX7A /ECC83 Halo Getter Tube NIB
NOS Raytheon USA. BLACK Ribbed Plate 12AX7A/ECC83 Halo Getter Tube NIB.
Matched Pair 1960 Raytheon 12AX7A TV7 Tested.. Excellent!
30-day, no-questions-asked return. Very nice 1960 Black Plate Raytheon 12AX7A Matched Pair. TV7 minimum good test score is 32, This pair tests very strong at 46,45 and 46,46. All print is matching between tubes. Preamp tested with excellent results, and I didn’t hear any microphonic sounds when tapping or rubbing the tubes. TV7 Test score on the tube boxes.
Amperex Heerlen “THE FISHER” ECC83 / 12AX7 Preamp Tube Tested B&K 700, 606
A reading of 22/22 = 60% Gm/Mutual Conductance on the 700, so this tube tests good. Also tested 77/88 for emissions on B&K Dyna Jet 606.
PHILIPS ECC83 12AX7A 7025 MULTI AVAILABLE BLK PLATE VACUUM TUBE NOS- SOLD AS IS
I have 5 of these available made from the same bathch. This auction is for 1. The product is a new old stock (NOS) Philips 12AX7A vacuum tube with original box. This vintage electronics item is a sought-after piece for collectors and audio enthusiasts looking to restore or repair vintage audio equipment. The tube is known for its high-quality construction and performance, making it a valuable addition to any vintage audio setup.
E83CC MATCHED PAIR 12AX7 Double Arm O Getter NOS Audio Hifi Preamp
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.