How do cd-roms compare to a good transport? CD-ROM drives (the best) can have:
- better error correction (in the best cdr drives)
- better interpolation of unfixable errors (less audible distortion)
- usually more noisy (even at 1x) compared to the best rack transports
- usually more flimsy, plastic feeling and of cheaper parts
- probably much higher transport jitter (importance if your DAC doesn't have superior jitter attenuation capabilities. Most don't)
- cheaper price
- useless analog output (I know you said transports, but...)
Those are the obvious ones that come to mind.
I'd use Winamp along with Copah's CD Reader plugin (
http://www.url.ru/~copah/Index.htm ). It reads at 4x (for example) and can try to re-read parts that are unreadable. Combine that with a reader that is A) quiet B) excellent scratched disc reading capability C) very good interpolation of uncorrectable errors, then you have a decent computer transport for cheap.
Back to the last question:
Will a computer cd-rom drive automatically rival a good rack high end cd player in sound quality.
IMHO, no. The reason is transport jitter.
Good transports (whether cdrom drive or high end cd player) produce neglible amounts of jitter in their output signal.
This can be important, because external DACs often don't have a jitter attenuation capability that can remove all trace of incoming jitter.
This jitter, once it hits the DA conversion, can alter the sound. Some argue that in an audible way. At least it can be measured.
So, the devil is in the details (implementation) and not just whether it's high end audio player or computer cd-rom drive.
Unfortunately there are no simple jitter measurements for basic computer cd-rom drives in a computer setup, nor are the jitter tolerance values for computer sound cards. At least not publicly easily available.
regards,
halcyon
PS I'm not saying that cd-rom drive + sound card cannot be a high quality enjoyable combo. I'm using such myself right now on my computer. However it's not comparable to the best of cd players that I've heard.