Will an after market PC improve the sound of CDP??

There is a cable component that some of us may take for granted That is, 'AFTERMARKET" power cords. The issue is to what degree they may influence the sound of a component they are used with.

I use a Shunyata "Diamondback" PC with my Rega Apollo player. I may have compared this PC with the standard PC supplied with the Apollo a few times and discerned some improvement, but not enough to run out to "recable" what components I had at the time

Therefore, are there some aftermarket PC's that offer a noticeable improvement in the sound quality of a CDP?? I realize that with IC's, compatibility with a particular component is a matter of time consuming trial and error. However, is the degree of improvement with an aftermarket PC be as noticeable as with IC's, and require as much trial and error??