Since I got my M80's, I've been going through all my CD's. Surprisingly enough, not all CD's are created equally. I've got some CD's that are less than a couple months old that just sound like crap, while some older CD's sound phenomenal. Two older CD's that I have that sound amazing are Steve Miller Band, Number 5 and Ten Years After, A Space in Time. Both were recorded in 70/71. This would lead me to believe that the way the music was mixed and the level of detail the studio put into them is what makes a CD sound good. Not so much modern technology. Good luck finding # 5 though. Not a well known album, but dam good and nothing like the better known 'Jungle Love' Steve Miller sound.