Please define "CD Quality"........
what hard number specs are you looking for?
I guess the easiest way to find out is to play it through your surround sound system to see if it plays in "5.1 SS" or just "Stereo". The CD might specify in the fine print. Depending on the age of the C.D. it might differ. On the other hand; "DVD quality" means bottom of the barrel (4:3 video in 480P) and most likely "stereo" for audio.
I don't know the specs, but my subjective opinion is that the sounds quality is terrible on the music channels. To my ear, they aren't anywhere near CD quality.