Take this for what it worth (probably very little). Krell recommends not replacing their stock power cords. They sort of imply problems may result. Every time I have observed changing the power cord on a piece of Krell gear there was a dramatic improvement, not just a change. The review is for another thread, but just because VPI doesn't recommend or stock the better PC doesn't mean it will not help.
P.S. Love that Pixie Dust.
P.S. Love that Pixie Dust.