Thanks for the responses I’ll respond to a few questions
i did turn off the clock. Didn’t make any difference
i use the coax and toslik out to evaluate. The coax is a good hi-end cable.
I have not tried going straight from the BSN rca out to the preamp.
this system used an ARC Classic 60 tube amp, Herron 1a/166 preamp, and the NAD M51 DAC. Speaker cables are PAD, and cabling is all over the place now, but is currently Cardas Clear light.