The comment on The Venom by Shunyata for a power amp rings true. I use Acoustic Zen Power Chords and the Krakatoa ll were fantastic for source components but fell apart sound wise when I went to A bias on my Plinius. I tried a Cardas Golden Reference and it held its own on the amp but Eventually bought an Acoustic Zen Gargantua ll and it takes everything I throw at it.
I have never tried a Wywire power chord but I do use his Diamond Co axial on my Transport to DAC. Good quality great sound.
Get something up the chain if you are going to slap it on a high power amp.
Good luck.