7 Tube 12ax7 12AU7 DIY Preamp Stereo Preamplifier UNTESTED 100v. NO TUBES This has no tubes so was intested. This is meant to use 4 12ax7 and 3 12au7. I have not tested this and was told this is the tube compliment
7 Tube 12ax7 12AU7 DIY Preamp Stereo Preamplifier UNTESTED 100v. NO TUBES This has no tubes so was intested. This is meant to use 4 12ax7 and 3 12au7. I have not tested this and was told this is the tube compliment