I'm another believer. Super fortunate last night to have received a Denali 6000/V2 and Sigma V2 XC. It replaces my (oldie but goodie) Hydra 6 and Copperhead, thanks to @Puma Cat
for the mentoring and guidance. Let it settle in overnight, and first listen this morning in my home office (near a ton of computers, monitors, switches, VOIP devices, etc).
I am GOBSMACKED. How can power make this amount of difference? I was expecting maybe some improved silence, but not the greater details, tonality, musical presentation, macrodynamic, etc. Literally hearing things in the background that I have never noticed before; I only started the tunes 20 mins ago, and I'm now on song #7, and still hearing new stuff. It is at least on the same level as a big component upgrade. No A/B even needed, it's absolutely obvious.
Hats off to @CGabriel
. I'm sitting here with a string of happy expletives as the music rolls on. My only issue now is that my office setup is in such little space that the Sigma is sticking into the room out of the wall outlet and making a turn behind a corner rack, and I wish somehow I could get a 90-degree IEC connector...