Mountable bass knob included
Dual Input Switch
Subwoofer Stereo/Mono Switch
Left/Right Dual Input/Output
Subwoofer Frequency Selector
Rear Channel Output Gain Control
Subwoofer Output Level Remote Control Terminal
Bass Boost Level and Frequency Controls
Phase Inverter
Dimensions:6-7/8";w x 7-1/2";l x 1-3/8";h