Assuming you are wanting a "picture" look (back of the TV to sit against the face of the wall), we get the framer/finish carpenter to build a box 2" smaller than the size of the TV and 4" deep. This allows for all the space required to fit the one connect box, Sonos Amp, and power while still being able to have the TV sit flat against the wall.

send me a message with your email and I can send you some pictures.