I've got a power conditioner and it conditions the power perfectly well. The problem I have is that it buzzes like a bee in a flower garden. This isn't 60 cycle hum...the unit is actually buzzing. I can't record with it on. It's just too loud. Not ridiculously lound, just loud enough to be annoying. Has anyone else experienced this? Can it be fixed? Is it something I could fix? It's out of warranty so sending it back for a fix would cost me money. If it helps any its a Furman PL Plus Series II. If I'm stuck, does anyone have any recommendations for power conditioners/regulators? Any advice on updating to a regulator from a conditioner? I'm powering my audio interface+Ai-3, 3 rack synths, 2 pre-amps and have a couple plugs left over for jacking in various devices.