15 Band graphic EQ, 4 inputs and 6 individually assignable outputs , Independent equalization for front, rear, and sub, Independent crossover for front, rear, and sub, Selectable slope (12, 24, 36, or 48db per octave), Front and rear channels can be delayed independently up to 10ms, Easy behind the radio installation in most applications, Can be used with OE and aftermarket radios, Chime control for GM/Chrysler vehicles, Clipping detection and limiting circuits, Internal header port for adding interface modules, Bass knob included, Retains OE voice prompts (SYNC and OnStar), Retains factory chimes including parking sensor and cross path.