Mr. Tennis - The problem with comparing my USB DAC with your CD player is that everything is different, the interface and the DAC. My DAC even has a volume control, so it would replace your preamp. It's not fair really. It will make your CD player sound like a boombox. This is an award-winning front-end that got best of show from TAS for the last 2 years at RMAF.
A more fair comparison to see how computer audio compares to optical disc would be to compare your CD player as a transport to my USB converter as a transport, both driving the same good DAC with the same S/PDIF cable.
Steve N.
Empirical Audio