PC/Conditioner question

I just picked up a new aftermarket PC for my amp, 10 AWG, good reviews, good name, etc. My plan was to then get one for my CDP (same name, 14 AWG), get a power conditioner and then get another PC (different name) for the conditioner. Right order or not I do not know, but this was my plan.

I like the PC that I got for the Amp, gives me much more dynamics, detail and soundstage. However, on some favorite CD's there is now grain in the treble, I am assuming this is just more resolution as a result of the PC (or is it digital nasties?). It does become fatiguing.

But my question is this: Will this edginess, grain,brightness whatever you call it go away via me getting these other items in place in my system? I read a review, Soundstage I think, that said most power cords get grainy due to picking up RF and EMI, yes? I am thinking that this grain will go away once I get a conditioner in place (and other cords), but I am not sure since this is my first gander into PC's. Or is this a PC matching issue and I should start to look at other PC's. Oh, dedicated lines are not an option and cannot do PS300 cost range.

As always, Thanx in advance.

Matty