Furutech GTX NCF receptical break in, how long

I don't disagree with your theory at all.
What I am suggesting is that if you install a new, unused Furutech GTX Gold, Rhodium, or NFC outlet into your wall outlet as others have you will experience the same results as described above.

@lak 
No, I don't, and I wouldn't given an unlimited budget either. I think these "tweaks" are antithetical to HiFi. The entire point of a high fidelity gain stage is to build a circuit as revealing of the input signal as possible while revealing nothing in the source of power. I consider these kinds of tweaks revealing only the weakness of the gear. It takes no skill or cost to build gear sensitive to anything coming through the mains. It takes skill and money to build gear that is indifferent to it.

I don't intend to create a personal feud since you and I just disagreed about something rather trivial in another thread, but again, I feel compelled to comment. Your view is the same as mine in THEORY but the reality is that the vast majority of very well designed amplifiers are still affected by these kinds of things. When you climb up the ladder to very sophisticated revealing sources, preamp, amp, cabling, and speakers, the "everything matters" effect becomes more and more applicable. I mostly agree with you. Many if not most times, a very well designed amp is going to sound best plugged directly into the wall. But the wire from the duplex to the panel and the duplex and the PC often make a positive difference. It's not huge, but it's there. If your power is dirty, a conditioner can make a very positive difference. Most of us are way too busy to spend hour after hour experimenting and undergoing the expense and headache of swapping out power conditioners so the natural inclination of many is to say it is one more aspect of high end snake oil. The naysayers simply don't know what they are missing. 

My Tinnitus tells me a receptacle needs breakin...FACT!