I second Elizabeths suggestion to burn a cd-r from the cd's and try that.
It's the cheapest test and involves exactly zero changes to your system. I now do this with almost all of the cd's I like. They sound better than the factory discs in every case I've tried so far. I did a blind swap with a friend with very good ears: a/b'd the factory disc and a burned disc (played one song- then played the same song back to back) and in 4 cases he was able to identify the copy as the better sounding disc.
It's the cheapest test and involves exactly zero changes to your system. I now do this with almost all of the cd's I like. They sound better than the factory discs in every case I've tried so far. I did a blind swap with a friend with very good ears: a/b'd the factory disc and a burned disc (played one song- then played the same song back to back) and in 4 cases he was able to identify the copy as the better sounding disc.