I second the VH Audio powercord. I just built 2 flavor 2 cords for my monoblocks and am favorably impressed with their performance. They have lowered the background noise below what I thought was possible-- I thought it was quiet before, and didn't realize how much noise was there until it was gone. Supplies to build 2 6 footers was $130 or so and it took me all of 30 minutes including beer swilling.
