Butler .. just thought I'd update. After burn-in and some listening time, I pulled the plug on the PSU MK2 and put the QuteHD power supply back in. I was very surprised to hear everything collapse a bit .. soundstage, bass, everything. Funny, I was quite happy with the sound I was getting from the QuteHD prior to the upgrade in power supply. I'm now a believer in clean, well implemented power. The King Rex is a keeper.