The RUX-C810 allows you to easily control the volume and bass level of your music and recall your favorite, customized sound settings on demand. The RUX-C810 is a standalone controller for the HDP-D90 Alpine Status 14-Channel Hi-Res Digital Sound Processor and Amplifier. The rotary knob allows for easy adjustments to the volume and bass level of your music. The RUX-C810 stores your customized sound settings and allows you to easily choose from available presets to get your ideal sound on demand. Compatible with HDP-D90 Alpine Status 14-Channel Hi-Res Digital Sound Processor and Amplifier (sold separately) Rotary Encoder with blue illumination Black/white LCD display Adjusts volume/bass level Selects main/auxiliary input sources Calls preset for customized sound settings RUX-C810 controller unit w/ integrated 5m connection cable Installation bracket