Control the level of your HD or XD subwoofer amplifier or multiple channels of an HD or XD multi-channel amplifier from the front of your vehicle.

This is a true level control, not a "bass boost", and can be used as a subwoofer level control or as a full-range volume control, if desired.

Assignable channels on HD600/4, XD400/4 (control 2 or 4 channels) and XD600/6 (control 2, 4 or all channels).

Multiple amplifiers can be controlled with one controller by adding standard phone cable splitter (not included).