I've had some time to do some more experimentation, so I thought I would follow-up.   I replaced the 10uf Elna electrolytic coupling caps with Kemet polyester film 4.7uf. I can't compare A-B obviously but the output level or sound doesn't appear to have changed significantly.   I have an...

Quote:   The observation with volume/SQ was based on a few things. Please forgive my terminology as I'm sure it is both lacking and incorrect...   -Observation #1 was that the path with the higher gain (toslink) appeared to have more "range" or "depth" and very clear higher...

Yeah, I had a LPF on the output with a -3db cutoff around 33khz but I was worried that was part of the problem and removed it. I am using the 10uf coupling caps that are recommended, and went with Elna electrolytic.

Hello all, I recently built my first DAC with TI's pcm2902 USB chip. I basically used the datasheet schematic example with all recommended values for resistors, caps, and voltage regulation. When using the chips digital out over Toslink to my receiver I get full and clean sound. However if I...