Kicker's IQ900 allows for precise sound tuning and full system control right from you dash. With a full 9 bands of equalization, you can cut or boost select frequencies up to 12dB. Plus, the 9th band's center frequency is fully variable for precise sub-bass tweaking. The front and rear outputs have a dedicated fader control for proper image balancing. There's even an 18dB/octave crossover with a variable subwoofer crossover and output level control. Other features include high or low level inputs for installation flexibility, and dual selectable illumination color.