Robert Ridgestreet has designed his power cords to address something no one has, to date. Please read and or call tha man.
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Psychicanimal (Threads | Answers)
Bob's one of the best in the business when it comes to customer service and passion for his products. Having said that, I have found other interconnects and power cords that work better in my system than the offerings from Ridge Street Audio. Generally, an opinion like mine will be met with a comment that I need to install all Ridge Street Audio cabling to receive the full benefit of the products. Perhaps this is true. However, the pricing of the RSA wire is prohibitively expensive for me, and my listening impressions of cabling from other companies have been more favorable.
My experience with RSA wire leads me to agree with the system dependent qualifier, correct or not.