[einmus]

Audio CD is an old technology. It doesn't have advanced error correction method. With poor quality CD-R, it's true that the quality is not the same.

[andybak]

Excluding from skipping and audible glitches that doesn't sound plausible.

i.e. copying an audio CD can create gross errors but not a more subtle change in audio quality (loss of dynamics/frequencies etc).

If you disagree could you point me towards some evidence?