you want a powercord upgrade? look at the ones offered for $200-2000, then go to your best local electrical supply store, buy the same wire and connectors, go home, put it together and, SHAZAM, you've got a black cha cha, nbes, whatever, whatever for a tiny fraction of what you'll be charged to hear (is it there, is it there?) the sort of difference you'll only obtain by moving from mid-fi to the highend. seriously, you can improve the sound of some componenets that come with less-than-flaccid powercords by upgrading them, but you really can do it yourself.
Power Cord Advice
I have the following amps in my system, Acurus A250, A200, and A150. Would I realize a noticeable improvement in sound and dynamics with higher quality power cords. Also do other components in my system need upgraded power cords or just the amps. Thank you so much for your help. Rick