The MVR-75 is a rotary-type wall plate volume control for speaker systems with power ratings of up-Inch 75 watts per channel and impedance ratings of 4-Inch 16 ohms. This rotary control can be set-Inch one of twelve positions including the minimum (off) and maximum volume settings. The wall plate mounts into a standard single-gang low-voltage wall bracket (not included) and has inputs and outputs for one pair of stereo speaker wires (4 input connections and 4 output connections). It can accept speaker wire in sizes from 14-Inch 16 gauge and provides a frequency response range of 35 Hz-Inch 20 kHz (+0/-2db) at the full power rating of 75 watts per channel. Please note: This volume control does not include a wall mounting bracket. Monoprice has everything you need-Inch enhance your home theater system! You may also want-Inch consider: Low-voltage mounting brackets and wall-plate accessories In-wall speakers for a professional home theater looking-wall CL2 rated speaker wire