I would absolutely agree with @ericteh
about the sound of Oyaide power cables.
I am a big fan of the Oyaide power distribution products. The Black Mamba V2 is one of the best values in 12awg power cables- and is neutral. Of course the US markup is way too much...next time you are in Tokyo stop by the Oyaide shop, such fun.
One key item from Oyaide that does not get much press is the P-004 UNPLATED Beryllium Copper plugs, and the R0 UNPLATED Beryllium Copper outlets. These were developed to have the most neutral presentation. I feel the palladium and platinum plated versions(P-004/R1) have a highlighting effect that may be good on tube gear, digital, and video, ymmv.http://www.oyaide.com/ja/products/power_supply/wall_outlet/r0
-Beryllium copper has a tensile strength 1.5 times that of phosphorus bronze. This allows for a strong grip of plug within outlet.
I have built many power cables with Japanese parts including Oyaide, Nanotech Japan, Acrolink, and others. Oyaide and Acrolink are my favorite of the cables.
Eric's Hi-Fi Blog is a good reference for people interested in Japanese power products:http://singaporehifi.blogspot.com/search/label/oyaide
I will use the Furutech FP-209 spades for large awg power cables, but after auditioning many Furutech products including their factory made power cables with NFC, and distribution boxes- I still prefer the Oyaide outlets, plugs, and cables. We carefully auditioned these items in a mastering studio and Oyaide was a clear winner for all.
-as always ymmv