PC suggestions for a Gryphon Diablo 300

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.

Interesting comments on powercords having less of an impact on amplifiers versus other system components.     
I currently have an Ayre KX-5 Twenty preamp and VX-5 Twenty amp.   I've noticed that while the KX-5 is definitely affected by powercord changes(the Cerious GE sounded the best), with the VX-5 I noticed little if any change at all between powercords.  (My Gryphon is due to arrive in a couple of weeks.)

With that said it may make more sense for me to save my money on the powercord and use it toward Speaker and IC cables.   This may have more of an impact.   Currently I have Wireworld Eclipse 7 throughout my system.

Appreciate the comments!