Julian Fowler in uk.rec.audio:


(the differences in what constitutes a '0' and a '1' is much
less with a dye-based CD-R than with the physical geometry of a
pressed CD). It is possible, therefore, that the CD player is getting
more read errors and doing more interpolation with the CD-R than with
the original CD.

There are programs, such as ExactAudioCopy, that will check the duplicated
cd is a perfect copy. If a player can't read CD-R it is outside the redbook
standard and shouldn't be sold as a cd player.

But if you want to make really sure your CDP is up to reading CD-R, get one
that can understand CD-RW too.

An easy test is to try burning from the same source onto different
media and at different speeds - and see which sounds "best" on your CD
player. There's also a somewhat more complex way in which you can
test whether the copy is, indeed, bit-identical to the original (a
necessary component of creating a "good" copy, but unfortunately not
sufficient - a copy that is identifical from the perspective of
computer processing may still produce a different sound through your
CDP)

Again, if your CDP can't read CD-R it is faulty. If a £10 cd-rom drive
spinning at 30-50 times normal speed can read the bits without error, I'd
expect any audio CDP to read perfectly at the relatively slow redbook
speeds.

--
Jim H
3.1415...4999999 and so on... Richard Feynman