Does Krell CAST matter if your source isn't CAST?


I was wondering if I'm running a Krell CAST cable system between a Krell KCT and a Krell 400CX does it really make a difference if my input is coming from a standard RCA phono?

It is supposed to be better.
I owned krell along time. my last set up was 202 pre and evo 600's. If you are using krell, the original designer, Dan D'Agostino, engineered and designed them around the cast system. Also, the cables are relatively inexpensive, versatile and easy to use. The better question would be, why arn't you using them?
I don't have the preamp yet. I'm using a Levinson 38s right now.