SDC - had similar results with aftermarket cords on my 4B-ST. I will qualify that I have not the disposable income to audition the really pricy cords but I played with cords ranging from $50 - $250. No audible gain in performance. My local dealer who carries Bryston advises that of the amps he carries the Brystons are the least affected by introducing pcs - something about how well Bryston rectifies the juice once it gets inside the box... So Wilbore, I feel the best thing to do is audition if you can or purchase based on the availibility of a 30 days return policy. I know in my heart that cables can make a difference but I am of the opinion that power cords can at times offer the least increase in performance - YMMV
