The Alpine RUX-KNOB2 is a plug-in remote bass control knob designed to give the driver or passenger quick access to subwoofer gain adjustment from inside the vehicle cabin. It connects to compatible Alpine amplifiers to control bass level without needing to access the amplifier directly.

The unit ships with a 5 meter cable for flexible routing to the dash or console and installs via a direct plug into compatible Alpine amplifier remote input. It is intended for in-cabin use to enable fast level changes while seated in the vehicle.