I believe that changing from PWT-1.23 did make a difference, I’m now using 1.24. But I also swapped out my Audience PowerChord (unshielded) for the stock PC. There was a noticeable collapse of the soundstage, but this was to test using a shielded cable.
As far as dirty power, I recently had an electrician upgrade my circuit box and add a subpanel with two 20A dedicated lines grounded to Hubbell receptacles with the addition of a 2nd grounding rod. Maybe I should call him to test the ground and for any DC voltage. Anyway, these new mains are super-quiet.
You’ve brought up a very valid point regarding critical listening and noticing a weakness in my system. As stated previously, Redbook sounds tonally correct providing a black background, but it is now very easy to hear the difference in sound quality of each CD. Female voices with acoustic instruments sound lovely, but Classical with close-miked strings and brass sounds etched. Old Led Zeppelin and the latest remasters both sound very good, but would benefit from changing the stock PC’s.
Have you tried listening to your CDP with the PWT disconnected and unplugged?
No, I haven’t, but you’ve given me an idea to try this and also use the CDP thru the Nuwave DAC. I don’t have access to a DirectStream DAC, but I may try to audition a good DAC from a dealer with a return policy. I tried the Schiit Grundir and preferred the Nuwave DSD (more organic and realistic low-end). I really like using the I2S connection, rather than coax where every cable has a different presentation and jitter becomes a concern.
Have you ever researched digital power cables that address the noise issue I’ve mentioned? I read about them on the Audiogon forums; JPS is well thought of…
Many thanks for your comments thus far, Jim.