Or I may have made a joke. I know what David is saying; I just found it funny that audiophiles spend thousands on “transparent” systems when a cheap solution like RPi (which is what I also use btw, not because of the “PC noise”) does the trick quite nicely.
Well, I did just that with my Topping D70 DAC, which is by no means an expensive piece of gear, and could not detect any influence of PC noise in the analog output. I did it for fun though, not because I think it’s reasonable to investigate the area any further. Filtering USB or PSU noise is a solved problem, and the fact that there are DACs out there that don’t properly do it doesn’t change that.