Power cord replacement where first?

Thanks for the input I do not have the Kimber pc yet but, also looking at zu, audio art. Anything I can find under 100 dollars really. But I never thought of experimenting after I purchase it haha. Good thought . I also haven't changed speaker cable. I guess I should look into that as well. Basically I want to improve my system by adding to what I already have before considering changing existing which I really don't want to do

I still have monster xp speaker cables. Maybe I should replace them first?

So I put it on the cd player. Definite improvements! Haven't pinpointed it yet, but music just sounds more.... "Right" definitly quiet or more quiet than stock. Listening is so much easier. Listening for many hours has become a much more common occurrence. I have not yet tried it on the amp and might do so for comparison, but I'm extremely pleased with the way things are sounding. And I paid $108 shipped for 6th, so I consider that a bargain. Thanks again everyone for the input