Best Power Conditioner

Best bang for your buck are the VansEvers Conditioners

I have the Bybee. It was a big improvement, really cleaning up all the crap you get in the line here in NYC.

PS Audio 300, 600, 1200

Chang Lightspeed 6400 CLZ, but the PS Audio may be better. Those can hum really loudly, though.

I use Bybee quantum chargers (there is tons of junk on my lines) in front of two PS300 (one for digital and one for analog). I use 90 hz setting. They are plugged in across two legs of a 240 circuit for a balanced input. I guess I'm lucky but mine are silent. I have a seperate floating star earth ground right outside the listening space. This made almost as much difference in my case as all the power stuff.