DRC is the digital interface between the bit processors and the user. DRC mounted in the vehicle dashboard with bit Ten D processor, provides: - ability to select between main, aux and optical inputs - control of master volume, subwoofer volume, balance and fader - ability to choose between 2 user-defined memory presets for equalizer, crossover and time alignment settings. - control of the Audison Thesis amplifiers’ system when these are installed in the same system.