I know, I'm about 10 years behind the power curve, however I just recently purchased a PPP, had it updated and made current by PS Audio.
I also replaced all of my AC power cords for my amps, subwoofer, and Oppo.
Between both of these upgrades, it is amazing the amount of noise that was removed.
There was no magic or FM, however I would speculate that the noise floor was reduced by at least 12db to 24db. It is a STELLAR improvement and the audio clarity is just stunning...Even with my very entry level, low grade system.
It is quite pleasing to hear the missed music that was being buried in the noise previously. I had no idea I was missing it, until I removed the noise and opened such a wonderful world of missed music!
One Blu-ray disc that really sounds amazing is the K.D. Lang in London disc the orchestra and band instruments really sound spectacular.
Glad I was able to get to this point, once my back pocket recovers, I'll look at getting my matching Mini-T center channel. From what I've read here, having matching pieces, especially the front 3 makes a world of difference. Might take a year or 2 but I'll get the matching piece!