First of all, I had a 8 gauge power cord before and did not expect any big improvement when I purchased the AC-12 cable. I was dead wrong on this. The AC-12 improves everything on my system. The treble/midrange opened up widely with better soundstage and bass is more solid. Also, the sound was not very smooth when I turned up the volume but now I can listen to it for a long period of time without turning it down. I only have one word to say about the AC-12, Amazing!
I also purchased the Power Port at the same time, however, it undo all the good things about the AC-12 after I installed the Power Port to the wall. Does the Power Port needs to be break in like cables?