Furutech GTX NCF receptical break in, how long


Bought NCF with 6 day burn from seller. I have it burning in last 5 days on 2 cheap power bars with old desk top towers, fans, TiVo box, home theater amps. My amp and Preamp, phono stage and CD player are all tube so I don't use them. Ran system on outlet tonight and no bass, bright, sounds bad. First day with outlet it sounded very nice. Any owners of rhodium outlets can tell me what I'm in for time wise, or what to expect sound wise in next couple weeks, thanks
paulcreed
Paul, I have experienced that harsh broken glass sound as well at times where I thought it was burned in.  It is also like some evenings it sounds okay but the next day it will be really bad and un-listenable.
What do you think is actually happening during this "burn in" process that would explain the purported sound changes?

Outside audiophile lore, I've never heard any electrician or electrical engineer (who isn't selling high end audio products) say any receptacles need "burn in" for any reason.

So I'm wondering what the actual technical reason would be for this "burn in" phenomenon and why it would alter sound.

(In my own experience, I've never heard a difference whether I've changed the outlets where my equipment was plugged in, including moving to a new dedicated outlet, or whether it's plugged in to my Furman power conditioner/bar). 


Ah, the curious, probing mind of the audio skeptic. Why do receptacles need burn in? Why do cables need burn in? Why do fuses need burn in? Why do capacitors need burn in? Why does contact enhancer need burn in? Why, why, why?! Sweet mystery of life. Why do the stars go on shining? Why do the birds go on singing? 🤡