New Electrical Circuit

Minimum 20 amp CCT , I run Cardas Audio 4181 receptacles. I have 2 systems with matching electrical feeds.

@hilroy48 The electricians have it scheduled for 15 amp circuit. So a 20 amp is the way to go? What about the size or type of wiring ?

I'd run 20 Amps, which immediately requires 12 gauge wiring. 

At a bare minimum, use Commercial/Residential outlets, which now have to be Tamper Resistant (TR).  Relatively affordable ($4-5 each).

While your electricians are in there might as well also put in a whole house surge protector in the panel.

12 gauge solid copper for a minimum.  14 is better but much harder to work with.

I use an Oyaide receptacle following a hospital grade one.  You need it tight. I didn't notice any sonic revelations but I do enjoy my music more.

Had to cut an existing gang box to get it in dere.

@puffbojie I am an electrician, so I installed them myself. # 12 AWG RW90 wire, 20 amp Sqaure D QO breakers for my panel, and Cardas Plugs. The difference was well worth the effort. Dead quiet, larger soundstage, seemed deeper and wider, the presence felt bigger.