It was an academic question. My digital audio chain is excellent as is my analog chain. I enjoy both equally. The only thing that keeps me up at night is listening to more music when the world around me goes to sleep.
The resolution of DSP is not limited by source material sampling rates and should have no real perceivable audible effects. I would argue that the additional cables, connection points, and circuits required would have more effect on sound quality, but that was not the question either.

