I am curious if SONOS thought about how they expect the Playbar to be wall mounted with the wiring concealed. From the looks of it, and the optional wall bracket, they did not think to hard. :)
Surely they are aware that if you wish to adhere to electrical codes, you cannot simply run the power cord through the wall. It needs to have an outlet behind the speaker. That is the main concern. And it applies to nearly all soundbars that are powered via high voltage.
As a custom installer, I will find a way to do it. I have 2 ideas in mind and will post an update when I have figured it out. But manufacturers need to take some thought about how people are going to use their products and design them accordingly.
Stay tuned for "how to mount your playbar, conceal the wiring, and keep it legal".