You haven't really given enough info to wager a guess, but if you mean you have it hooked up via stereo analog and you want to know if it will sound better via digital then the answer is: it depends on which player and AVR we are talking about. My guess is there won't be a big difference. It is simple enough to try it both ways, a coaxial video cable is the same thing as a digital coax cable, and often analog RCA cables are built to the same spec.