I have tried a few lower end pcs and have found no difference although I am not saying that with the right cord a difference could not be realized. Its my opinion that an aftermarket pc unless properly filtered would only enhance or magnify the "noise" found in your home's power lines. Possibly using clean power, say from a PS Audio 300 or the like, would possibly bring greater results as opposed to higher end pcs. "Clean" power seems to be the best starting point after which pcs could be auditioned...just my opinion
How come a power cable changes the sound?
A good power cable definetely changes the sound but how ? A cheap 2,5 mm copper cable comes upto wall outlet and comes through a fuse (which has very thin wire) than we add a huge heavy power cord which cost 500$ than the sound of the equipment has big improvement What is the technicial logic and magic out of that ? Thanks..