Did anyone return a PSAudio Powerplant? Why?

I’ve toyed with getting a Power Plant, but haven’t. Even when the lights flicker from changes in the power grid or dim, like when the AC goes on, I have never noticed any changes in the sound in my system. The last few weeks have been really hot here,( especially for it being only June) so the AC has been running a lot!

@nyev 

Take everything you hear from ASR with at least a pound of salt!

All the best.