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

Albert, when you feel up to it, try a Furman IT Reference 20 (or 15). I heartily agree with your general skepticism about power conditioners, but the Furman actually works and makes a very notable difference (for the better) in my system. I know you’ve heard this sort of claim many times before, but lo and behold, someone finally delivered.

FWIW, I have the RIchard Gray stuff hooked up in my video system, which is totally separate from the hi-fi system.
The hi-fi uses 20amp dedicated lines and shunyata hydra/anaconda, etc. One noise I simply could not eliminate was a electrical snapping sound whenever the air compressor for my airline arm kicked on- the compressor is located in a separate room (more like a large closet) with separate power lines. But, even after adding an expensive relay supplied by Kuzma for the compressor, the zapping noise would still appear. Almost sounded like the stylus being pulled across the record.
The solution was to plug the air compressor power cord into the Richard Gray step-down transformer, which is a big ol thing, takes 220volts from the wall and brings it down to 120v. This may have nothing to do with the quality of Gray's 'proprietary' conditioning technology, and everything to do with the use of an what I guess is simply a big isolation transformer. But, damn thing works. It is also used to power the projector and a host of tube amps, processors, etc. for the video system.

I went from a mid-fi higher powered system with 90dB speakers to a low-powered SET system with 97dB speakers. I first noticed a fairly loud 60Hz hum when I simply connected the higher-eff speakers to the older setup. It was even more noticeable when I added in my 6 wpc Art Audio PX-25 amp. The hum from my new speakers was audible from listening position 14-17 feet away.

I tried several obvious things to get rid of it - I cleaned up the contact and re-grounded the breaker panel to it's connection with my copper water pipes. I replaced all the outlets in my house and grounded those to the romex line, etc. etc. Nothing worked.

A dealer loaned me his RG Pole Pig and RGPC 400. Cleaned everything right up. Musical background was dead silent. Individuals notes stood out with greater clarity - yada, yada. Pretty amazing and no noticeable loss of dynamics.

Ultimately, though, I couldn't justify the cost of the RG equipment. I bought several surplus industrial 2.4KVA Topaz Ultra-Isolator isolation transformers and wired them in balanced configuration yielding 120dB common mode noise rejection. Worked out just as well as the RG products at a fraction of the cost. I plan on adding some filter units to the mix for even better AC.

The tale of the Emperor's new clothes describes people who pretend to see (in this case hear) stuff that's really not there.

Well I just got a RGPC Pro yesterday and I can tell there is a difference as far as the soundstage, resolution go. I recently added a PS Audio Harvester and this was blinking continously but after the addition of the RGPC not a peep from the device.

As every system is different if the device works great if not don't blame the RGPC chances are its your system thats not up to mark.

As every system is different if the device works great if not don't blame the RGPC chances are its your system that’s not up to mark.
Athipaul

Or, some systems do not have electrical problems where the "band aid" of power conditioning is an improvement.

It would take two pages for me to list all that I did to get my electrical right. Lets just say that the stereo alone has 14 dedicated runs with preferential grounding and a 750 amp (Commercial property) Trans Socket meter from the local power company.

Seem ridiculous? Well, my electrical cost about $3800.00 to get it right, about the price of two aftermarket ultra high quality AC cords.

Lots of ways to get the power supply right, I believe it's best at the source.

I have no use for conditioners which compress dynamics, slur high frequencies and alter the phase of the music. If you have problems of operating off a terrible local electrical grid, live in an apartment or high rise where everyone in the building is beating on your stereo, then yes, maybe conditioning is preferable to having none.