PC suggestions for a Gryphon Diablo 300

On amps as well built as the Gryphon line, adding an expensive power cord will probably not effect sound quality as much as you might like to believe.

I have experimented with lots of different power cable geometries on different components in my system and found that the greatest improvements were attained by using quality power cables on components having smaller power circuits, like my Node 2 streamer and to a lessor extent, my Simmaudio MOON Phono stage. The Naim amp, which has a much larger power supply, did not show as much of an improvement, but it did reveal very fine micro details.

The Gryhpon line tends to have large high quality transformers supported by large capacitor banks.

With amps of this nature you want a reasonably good power cable that can provide the current required.

Personally, I use DIY PC’s of my own design, which you can see here...
http://image99.net/blog/files/category-002ahelix-power-cable.html

As for commercially available products, for the Gryphon I would opt for a Nordost PC or simply go for the Gryphon PC. Although the stock Gryphen power cables is probably more than sufficient.

If you do use an upgraded power cable, please post your findings here - it will be interesting to see just how good the stock Gryphon PC compares.

BTW - ensure you use low capacitance speaker cables with the Gryphon - it has a tendency to Oscilate and fry the internals if high capacitance speaker cables are used. (happened to a friend - ouchhhhh!)

Suitable capacitance values are 32 pf/meter - or contact Gryphon for their preferred capacitance value

Hope that helps

Thanks for all of the advice williewonka!   Especially, the speaker cable comments.  I had no idea on that. 

There is a used Purist Dominus Revision C Ferox power cord for sale here. It is mostly silver alloy. Gryphon uses silver wiring. That's what I would try first, before spending much more on Gryphon power cord.

I've got the Diablo 300 since one year now. I never used the original cable but went for the Nordost Valhalla. As this is what I use in the rest of the system. I also believe it can be slightly improved by an upgraded cabel (over standard). But less so than other amps. 

The power cord you are using (Cerious GE) is very good, there are other power cords out there that might sound a bit better such as the New Cerious Matrix power cord, the Furutech DPS-4 and/or other brands. This is just a guess, however, I don't think that because Gryphon makes a power cord (or has one made with their name on it) that it would work any better than other brand.
Also, I agree with williewoka, with a really good amp or integrated amp I've havent heard much difference in sound using various audiophile power cords.