Prior to my RGPC S400 I was using a Monster 2500 which is a very good unit for its price. I have everything plugged into it with the exception of my amps. The difference between the two units were night and day. The Monster made a huge difference in my audio system when I first inserted it into my system. The biggest change was that I noticed my sound stage become more quiet with less backround noise. The RGPC took everything to another level. A much much better bottom end, smoother and warmer highs and an even quieter soundstage. I've also noticed better blacks in my front throw projector. Hope this helps.
Richard Gray's Power Company
This is a huge inductor in parallel with the power line. It's supposed to act like an electronic flywheel to smooth out power supply fluctuations. I like the concept. Has anyone had personal experience with this device? Did you use it with the low powered front-end components, the high powered amp, or everything? What improved or worsened?