What I've learned thus far in this bizzaro hobby about pc's is that like anything else they alter the reproduction coming out of your speaks. You either like it or you don't or you get used to it or tired of it and make a change. I've experimented with SR masters, SR reference, eels, and mit z II's. All are good in a different way. On a classe amp none of these cords except the mit can handle the ultra high current design of the ca series, they create a midbass fatness that is coloration - at first it sounds like solid deep bass but as you listen it becomes something you notice constantly. The mit is designed for high current design like spectral eq. and adds in my listening experience nothing noticable, just additional smoothness and a little depth. Now, the mit can be had for around 80 bucks so it can't be as good as dropping say 500 or 1000 right? - that's what our quest/obsession has implanted anyway. The Sr's are good on the front end which is really where pc's are the most needed/effective. The eel on the frontend doesn't have the sparkle that the SR's do but does that make it nuetral? that is my experience with pc's, they do make a difference and it is amazing, but they can be a really expensive, uh oh, this might get me banned from the club, tone control. Try before you buy!