This is not a speaker review, not even a VSA review at all, but in reading this review of a Pass Labs integrated:http://positive-feedback.com/reviews/hardware-reviews/pass-labs-int-60-integrated-amplifier/
I ran across this statement:
Thanks to a generous audiophile friend, a few weeks before posting this review, I was the recipient of a short-term loan of some older versions of high-order Von Schweikert Audio/Masterbuilt cables: Bi-wire speaker cables, XLR interconnects, and a power cord. I was somewhat shocked (and frankly, a bit dismayed), that the improvement in my system was so obvious. Increased clarity, a further expansion of space, and better focus for starters... While the speaker cables and IC's made definite difference, it was the power cord plugged into the INT-60 that took my system to a new level of performance. These cables are not in my personal budget, but readers should be aware that even though I have thoroughly enjoyed the INT-60 in my modest system, the amp had untapped potential that these cables brought to the fore.