Tubes Asylum

Posted by Spantou (A) on February 15, 2024 at 12:09:22

In Reply to: RE: Tube bias tool posted by ppopp on February 15, 2024 at 04:58:02

More information would help get you better advice. What DAC, do you have a schematic, what tubes, what do you mean with sonically pull to one side, is "pull" static or does it changes with volume?

My guess is that each tube serve one channel and that the tube pairs are poorly matched in gain, which causes one channel to sound louder than the other. Typically DAC circuits do not allow bias adjustments of tubes. You could try to match the lower amplification tubes into a pair, and likewise with the higher gain pair.

Good luck.

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