Does a brand new electrical circuit for audio gear benefit from burn in/break in time?

Without breaking the bank $300 each for Furutech not necessary 

pangea  makes very robust outlets with excellent grip gold over Copper 

$50 to $100 each whatever you can afford . Very easy to instal even has a video

Without question it does get better give it a week ,just like speaker cables 

and use good gold copper outlets the garbage that are on your wall is $3 

 buy good outlets and always copper,never aluminum wire !

These outlets are great built like a tank put these in your audio room for $100

money well spent