I messed around with conditioners but finally got what I needed by running 2 separate circuits(I'm about to run a third) for my stereo only. The ground for these circuits is connected to a separate ground rod instead of connected to the breaker box with all the other grounds and neutrals. I have much better sound than any conditioner i've had in the past. And lets face it ,if lightning hits big time on my house electric, Unpluging is probably the only thing that will save your equipment.
Dave
Dave