This is a rotary-type wall plate volume control for speaker systems with power ratings of up to 75 watts per channel and impedance ratings of 4 ~ 16 ohms. This rotary control can be set to 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 (available separately) 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 to 16 gauge and provides a frequency response range of 35Hz ~ 20kHz (+0/-2db) at the full power rating of 75 watts per channel.