Agreed that there are many variables in play that affect sound quality. My post was simply to point out that a new digital format cannot be a magic bullet to reducing those variables. If @Ards doesn't want to attend to a lot of details, maybe buy something like a Tambaqui and connect an Ethernet cable and a couple of interconnects to an amp to it. I can assure you he'll be getting well beyond "decent" sound and hearing everything that's on the CD, stream, etc.And the other thing which is rarely discussed is the software used for playback. For many of us, experience has shown that sound quality is often not the same for different digital player (and server) software.
If people choose to experiment with cables, power supplies, etc., that again has zero to do with digital format.