My Denali X has been running for several weeks. Powered by the Sigma-X XC cable from a dedicated 20A circuit. Only digital front end components being powered from it: Aesthetix Calypso Eclipse preamp, PS Audio CD transport, Grimm MU2, Tempus switch. The preamp and switch with SRA Takshaka cables, the CD transport and MU2 with Shunyata Theta XC cables. A significant widening and deepening of the sound stage, much more nuanced details in the upper register (hearing lots of lower volume stuff in the mix for the first time), and overall a more forward sound presence. I think the later is being contributed to by the Theta XC pc's, particularly powering the MU2. Not harsh or unpleasant, though a little bright at times. I swapped in a Theta NR, which had been powering the preamp at one time, to the MU2 and lost more than I expected in detail and clarity, so the combination of the Theta NR noise reduction function and the Denali-X noise reduction isn't a workable combo apparently. I have two more SRA Takshakas on order, but am curious what others are using for power cords between their Denali-X and front end components. Shunyata recommends the Sigma-X QR or NR, but I'm wondering if there is the potential for negative impact on sound quality.