This impedance-matching volume control kit is designed for whole house audio systems and dedicated audio zones so you can control speaker volume independently within various areas of your home or office. It can be Installed easily and works with almost any audio system, includes three decora style trim plates in white, ivory or almond to match your room décor as well as a 12-point linear control knob to adjust volume from high to inaudible. Rated at 100 Watts peak with minimal bass roll-off, includes adjustable jumpers to add up to eight pairs of 8-ohm speakers simultaneously depending on what type of load your amp can handle.