The DimmerMaster Shoeboxes are a line of very compact and rugged truss-mount dimmers with a variety of power in and out options. They all accept DMX and 0-10V Analog inputs. The DimmerMaster Shoebox truss-mount dimmers come in a variety of configurations with 1 or 4 channels and power capacities. They may be pipe or tree mounted and are perfect for tight spaces.