Tube pre amplifier 6J1 from assembly to sound test.
Checking sound quality with and without the 6J1 tube pre amplifier.
Sound test at the tail end of the video.
6J1 tube pre amplifier does it make a difference?
Tube pre amplifier 6J1 from assembly to sound test.
Checking sound quality with and without the 6J1 tube pre amplifier.
Sound test at the tail end of the video.