Saw a couple posts about correctly designed power supplies. Certainly correctly designed PSUs are important and contribute significantly to good sound but unless I'm mistaken, most PSUs have nothing except maybe a snubber before the primary. This does nothing for the poor quality AC that comes out of the wall and it's relationship to the primary.
There are a myriad of line conditioners that effectively address some of the issues of poor AC quality and improve sound to one degree or another. But, as I see, there are other issues left un-attended.
I prefer AC product designs that address what I see as un-attended issues and, a specifically designed power cord can do that. In my experience, when these other issues are addressed, other AC gremlins become significantly less relevant and line conditioners become more of a preference than a necessity. We use no line conditioners here and I'll assert that our system here is probably on of the most musical and life like presentations you'll experience. It has it's limitations like any other system but.... And yes, we use all our AC, cabling and loudspeaker products to help accomplish what our system does. This all goes to the original topic and question of this thread. Forgive me if you don't like how I'm willing to answer.
To appease Mrt, other AC cords I have respect for come from Prana, PAD, VD, and Micro-Omega. Though there are some commonalities (as well as vast differences) between these products and what we're doing, I suspect the materials and applications are for different reasons and so the design goals are optimized differently.
So Mrt, are you ready to buy?
Quack, Quack!
Robert
RSAD