Man that sucks. I got mine today and it was purchased on the 17th. It is chinese new year though so maybe its slow. This is what he wrote back to me today: hello, ecc88 and 12ax7 only filament pins different, the board have have three jumpers, one for ECC88 tube, two for 12AX7 tube, if you have multimeter you can test, the adapter sold over 600pices, never not works. Thanks! I cant imagine that I have 2 bad tubes. I guess i could go buy another converter and another 6N3 tube to test with and see whats what? I do have a multimeter - i suppose i could try and figure out whats messed up - i'm guessing its the converter but I dont want to damage anything by screwing up.