This is an awesome, ultra-high performance unit with a very cool swing design. It lets you fully customize both illumination and sound, witha range of 512 colors and super-versatile Bass Engine functions like digital time correction and parametric EQ. You can download audio parameter settings and connect and control as many as eight amps. The BioLite display is incredible and the Menu key and rotary knob make operation extremely easy. The CDA-9835 is compatible with XM Satellite Radio- Simply add the TUA-T020XM tuner box and you will be enjoying coast-to-coast digital quality XM radio (XM service subscription fee required).