the salesman who i purchased the ps audio gcc-100 amp from and he said the naim cd player was the worst choice to mate with the ps audio but i couldnt follow the reasoning for it.(he said this even before i stated my problem)
Sounds like the salesman is trying to sell you an amp to go with your CD5X! With my CD5 I was using a pretty good DIN-RCA interconnect (I believe it was a Chord Anthem), and I had the CD5 plugged into one of Naim's power supplies (Naim Hi-Cap). Both those things would help, but I still wonder what gives as it should be a pretty good player in stock form. You did not say whether it was brand new or not. If brand new, I'd give it at least a few hundred hours of play time before making any judgements. It does not surprise me that your VPI turntable sounds great in comparison. I'm sure the CD5X pairs off very well with the NAIT given Naim designs with system synergy as a priority. I cannot imagine why it would be "the worst chocice" with the class D amp you have. If you get an explanation for that, I'd like to hear it myself...or, if anyone else could shed some light on that theory,,,?
Marco