I’m also a fan of Shunyata conditioners and power cords. I upgraded from the old Running Springs products (multiple Haley’s and Jaco). The Denali 6000 v2 came first with the Sigma XC cord, and everything improved in terms of detail, separation, definition and weight. Later I added the Everest with Sigma XC cord and changed over the power cords for my preamps and sources. (I have both conditioners in my main system, as I have a combined two-channel and HT system.). The improvement was substantial with the Everest. I recently changed the Everest’s power cord from the Sigma to the Omega XC and another level of performance was achieved. I would say that the improvement of the power cord was almost as much as going from Denali to Everest in my system. OP in your system, I think that you’d be happy with the Denali 6000 v2 with Sigma XC combo.
Many thanks to @craig for his input in this thread. I guess I won’t try a Puritan any time soon, as I’ve been curious about that conditioner as well. I am confused about not using a cord higher than the Sigma NR’s however. While I do understand the noise reduction in the cords, wouldn’t a larger gauge of the Omega’s be of benefit? I have a QR-s on my DAC and have been thinking about an Omega QR for my Coda amp. Otherwise I’ve been very happy with the King Cobra Helix CX’s on my preamps. I just picked up one of the two KC CX’s recently sold and am looking forward to placing it on my Aurender.