Power cable for NAD M2?


I am now using the Cardas Golden Reference PC to feed NAD M2. It seems the GR ruin the cleaness of M2.

Need suggestion for the PC for M2.
sigur79ros
did the original pc that came with the M2 'ruin the cleaness' of the amp???
No. The original PC keep the cleaness very well. I just want to change for the better PC to increase the dynamic and soundstage.
Curious to know if you ever found good PC match for M2? I'm thinking of getting an M2