Empirical Audio
Industry Expert
Could be any or all of those things. Luckily, I have lots of cds.
At least if you are spinning CD's make sure the jitter is low:
http://www.audiocircle.com/index.php?topic=154408.0
And you are using a good cable:
http://www.audiocircle.com/index.php?topic=154425.0
Steve N.
Empirical Audio