That's interesting - just to be clear, though, it was the Belden cable I personally found less satisfying overall, despite some positive qualities - I haven't yet tested the higher grade RA cables on the speakers as I have none long enough. I have the high current powercords in other areas of the system though.

Unfortunately, comparisons are now difficult as I believe the Yello cables (which, iirc, differ in purity of copper and a different dielectric, and also in gauge, and lacking kimber's varistrand wires (which claim to deal with skin effect) are no longer made. The more basic power cable RA now offers is, I believe, of a different construction (not woven) so I can't say that it would be likely to have a similar effect, although I haven't tried it, so can't really comment.