Review on OSD Audio 300W In-Wall Home Theater Speaker Volume Control - Black Knob Style - SVC300 by Tim Rios

Pros: - Fits in a standard single box, just make sure all cables go through the back hole in the wall (or you might have trouble getting everything in to fit the wall) . depending on the number and size of wires) - The included instructions are easy to follow and no soldering is required when connecting - Includes 3 wall plates and knobs in different colors (white, eggshell and brown) - The stylus rotates each label up and down smoothly turn. Cons: - When installing this I had to drill 2 extra holes in the wall to mount the top plate; Behind the white plate in the pictures is another stainless steel metal plate that matches the screws on the back box. A significant reduction in the volume of the signal sent to the speakers to which it is connected.