ryder, this is just an idea. No one mentioned Purist Audio Dominus so I will.
Diablo 300 is a powerful very dynamic machine and you might want a 'monster' cable to match it. Don't know about newer Dominus but older ones were a little on the dark side, but so is Diablo 300. I don't think you want to brighten the sound with power cord, you want more transparency resolution and dynamics. Similar matches well to similar not to the opposite.
I do use older Dominus REV B Ferox with my tube VAC Avatar SE integrated, and it appears to be a perfect match.

