Richard Gray's 400 Pro = Emperor's New Clothes??

I got rid of my R.G.400 after I tried the PS Audio P500. I have a dedicated 20 amp line and live in a more rural area that does not have peak hour current problems. Even given this, there is no comparison in the improvement to the sound I'm now experiencing w/ the P500 vs. the R.G. 400. Even my wife (who does not like my audio hobby much) appreciates the difference.

I have dedicated lines and find that my RGPC's still make a big improvement to my system. That said, I have a friend that cannot hear any difference with his RGPC's, however he lives on the outskirts of the city and I live right in the middle of it. I'm convinced that they work, but I am also convinced that their effectiveness depends on the condition of the power being fed to your house.

Celebrate. You`re ahead of the game.

I find that higher the resolution of your system gets, more you will find power conditioner useful.

I am using 400MK II. I am very happy with it. I have 2 dedicated lines. 1 for analog and 1 for digital. I find 400MK II is more suitable for analog equipment. Not suitable for digital. I have PS Audio Ultimate HC for DAC and Chang lightspeed 6400 for transport. When I first put the 400MKII into my system. I plug it into the wall and didn't plug anything in it, just the bass amp(I use bi-amp) on the same receptacle. The bass is more powerful and better control, even the sound is much smoother. Then I plug preamp and high-mid amp into it and get good results.

Even I have 2 dedicated lines and these 3 conditioners in place. Also 2 Quantum Symphony Pro, 1 Symphony and 6 Audio Prism Quietline on TV and computer circuit. When the laundry dryer is on or Brother Laser printer is on. My system sound quality degrade by at least 10% and have some annoying high frequency ring to my ears. I will try Exact power in the future. Hope it helps.

I think you will know what power conditioner is powerful in the HIFI system
Please upgrade your present system