There are really only two clean ways to deal with TV wires, and which one you can use comes down to the wall.
Option 1: inside the wall
On a hollow drywall wall over wood studs, the cables are fished down inside the wall to a recessed low-voltage plate, with an in-wall power relocation kit for the plug. Nothing shows and nothing hangs. This is the cleanest look and what most people picture.
Option 2: a raceway
On a masonry, brick, concrete or fire-rated wall, or an interior wall packed with blocking or insulation, cables cannot be fished safely. There a slim paintable raceway carries the wires down the wall and all but disappears once it matches the paint.
What not to do
Do not push a normal power cord inside the wall. Ordinary cords are not rated for use inside a wall cavity, which is a fire risk. An in-wall power relocation kit is made for exactly this job, which is why we use one rather than burying the plug cable.
Soundbar and device wires
The same applies to the soundbar and streaming box cables. They can be hidden in the wall or routed through the same recessed plate, so the whole wall reads clean.
Want the wires gone for good? That is our in-wall wire concealment service.