You could easily try it out by booting NAA OS on it. Biggest benefit is working around the DoP that is needed on macOS with direct connections. With NAA OS for example you can do native DSD without DoP as it bypasses CoreAudio completely. This opens up some more DSD rates, etc.
Sound quality wise I don’t think there is a big difference in your setup, although I’m not sure what kind of USB isolation (if any) the DDC has. If it doesn’t have isolation, then something like Intona isolator may be beneficial.
Thanks Jussi I will give that a try.
Also another quick question, I’m running HQ Player as Desktop on the Mac Mini would embedded be better? Thanks heaps.