Sorry guys, I forgot to include some details in my post. My primary need is for Redbook playback thru the PSA transport, computer audio via USB is secondary.
With a PS Audio setup, I am able to use the HDMI interface (I2S) which transfers the clocked signal and data on separate conductors, versus SPDIF which combines all data. The transport stores the data from the CD into a buffer, then clocks it, and sends a jitter-free signal to the DAC where it is reclocked. There is a major difference in performance between my budget PSA DAC and the higher-end DAC's using FPGA.
Yes, I'm very familiar with the Synchromesh. I spoke to Steve and almost bought one, but since I'm not using SPDIF, the I2S technology is already reclocking the data.
I have tried different coax cables (1.5 meter), but the HDMI always sounds best. I believe the Nuwave DAC is the weak link.