I can't find any used Richard Gray units.

[pepar]

<font color='#000000'>Other than a few on Audiogon and Videogon that get snapped up right way or whose sellers only accept money orders and/or Western Union, I cannot find any Richard Gray Power Company conditioners. Do people buy them and never sell them? I am looking for one or two 400 MK IIs.</font>

 

[abe]

<font color='#000000'>another reason is that probably not many people are using them in the first place.

It's too controversial.


Abe</font>

 

[pepar]

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abe : <font color='#000000'>another reason is that probably not many people are using them in the first place.

It's too controversial.


Abe</font>

<font color='#000000'>Understandable. &nbsp;That's why I'm looking for a used one to try instead of paying retail for something that turns out to be snake oil.</font>

 

[abe]

<font color='#000000'>I don't have the final word on power conditioners (P/C).

But as an EE graduate, I myself find the ideas behind power conditioner/cable are not very convincing at all, to say the least.  I had worked for two years for a major vendor of uninterupted power supplies (UPS) and P/Cs.  The application of P/C is very specific -- regions where power is very bad, visible brown outs or power sages.   The power supply module in all computers and most electronics (amps, cd players, etc) do regulate the power to a certain degree which is sufficient in most cases.

Some Amp vendors explicitly caution against the idea of P/C, for example, Bryston.   They know better how amps work inside and would not risk the liability to skip P/C if P/C really works.  


Just my $0.02.


Abe</font>

 

[pepar]

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abe : <font color='#000000'>I don't have the final word on power conditioners (P/C).

But as an EE graduate, I myself find the ideas behind power conditioner/cable are not very convincing at all, to say the least.  I had worked for two years for a major vendor of uninterupted power supplies (UPS) and P/Cs.  The application of P/C is very specific -- regions where power is very bad, visible brown outs or power sages.   The power supply module in all computers and most electronics (amps, cd players, etc) do regulate the power to a certain degree which is sufficient in most cases.

Some Amp vendors explicitly caution against the idea of P/C, for example, Bryston.   They know better how amps work inside and would not risk the liability to skip P/C if P/C really works.  


Just my $0.02.


Abe</font>

<font color='#000000'>I'm not an EE, nor do I play one on TV, but I'm not convinced power conditioning is copmpletely snake oil. &nbsp;At this time, I'm agnostic. &nbsp;The RGPC and others seem to be a &quot;parallel technology&quot; not requiring a piece of gear to be plugged into it to benefit from the p/c effects. &nbsp;My only reference is the whole house surge suppressor attached to the main breaker panel in our house.

What the heck is inside these units?</font>

 

[Unregistered]

I am an EE and also own several RGPC's. I tried one of the 400 units first (used on Audiogon), just to give it a try and found it made a huge improvement in the sound of my system. It cleaned away grundge and substantially improved dynamics. I was so impressed that I had 240VAC power run to my entertainment system (with an isolated grounding system) and then installed an RGPC SubStation and more RGPC's. The result has been an extremely clean and dynamic sounding system!

I think part of the problem with the perception of Richard Gray's products is with their inability to explain how they work - I'm not sure they understand it themselves. They put a large inductor(s) in parallel with the circuit load (audio/video equipment plugged into the wall). Because the frequency of the power is constant, the inductor presents a constant parallel impedance to the circuit load. Changes in voltage across the inductor (from noise, etc.) will be surpressed because inductors resist changes in current (a positive or negative voltage change across the inductor will try to change the current flow through it). Think of it like a spring - if you try to either compress or stretch it with force (voltage) it will resist and always try to return to its equalibrium (relaxed) state.

Anyway, that's my take on these products. Keep in mind that they are used a lot at consumer electronics shows and show up often in the equipment lists of magazine audio/video reviewers - if they didn't work I don't think they would use them.

 

[mtrycrafts]

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<font color='#000000'>Understandable. &nbsp;That's why I'm looking for a used one to try instead of paying retail for something that turns out to be snake oil.</font>

Not even worth your time to experiment. Besides, it isn't simple to get an unbiased outcome and a biased one is worthless

 

[Redbone]

This bias may be true but what does one do that has dirty power? I have my H/T unit on a circuit that contains 6 or more outlets and radiates all noise from any other electrical device in my home directly into my receiver and through my speakers. I know that I either need a dedicated ac line or an isolation transformer.

Don't say it is bunk unless you have no problem in your system to begin with, I assume someone who would buy this is trying to eliminate noise from their system.

I have both audio and video noise problems.