I've used Classe (old) and Cardas, then recently Stealth, which were MUCH superior. Since they come with a 30-day money-back guarantee, you have only shipping costs to lose by trying them. See some details of their technology at www.interlinkhouse.com.
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