Your CD player is fully balanced. You may have to do something to it in order to switch back and forth between bal and se operation. Your owners manual will definitely tell you what to do. Also, the problem may with not having the dac on the correct setting, either. The manual for the dac should cover this too.
It wouldn't hurt to check your digital cable, either. It may be damaged in some way.
It wouldn't hurt to check your digital cable, either. It may be damaged in some way.