Help choosing Power Conditioner

Tvad - Yes, I was referring to the transformer hum. The Powervar I used (ABC1200) had varying levels of hum by day, sometimes quiet in the morning and then noisy as heck at night. I tried some additional damping of the toroid, helped a little bit but not enough.

Agree with Snofun on the ethics issue,Bob

I got a 10 amp powervar used on ebay for under 50 bucks. Has minimal transformer hum, essentially inaudible at > 3 feet away. (Did NOT purchase from Tvad!). I assume it will protect the front end pieces if lightning strikes, and that was my main reason for buying. (Also, I was able to buy a kind of cool-looking gadget-like thing that was pretty heavy, which adds to any placebo effect....so yeah, I'm happy, I think).

OK, seriously--I was unable to hear any definite sonic difference in my system, but do have a vague sense that it is probably better than just a surge protector if there's a storm, etc. Hum is inaudible at listening distance (and my hearing has been relatively recently tested and is still quite good).

PS Audio P-300, nuff said. For source componants only. Use a PS Audio High Current Ultimate Outlet for power amps.