The digital processor provides 4 inputs and 8 outputs. It provides four into eight channels of matrix mixing, with each input channel including 8 bands of parametric EQ, all with adjustable response types. Each output channel shall provide high and low pass filters, 9 bands of parametric EQ (with adjustable response types), a program limiter ad a clip limiter. There up to 650mS of delay available on each output, in 300nS increments. Any output may be fed from a mix of any of the four inputs with variable matrix for the relative level for the four inputs. Headroom metering available for inputs and outputs. Only basic set-up of interface options and preset recalls shall be available from the front panel, and this may be locked out either completely or allowing preset recalls only. An additional security lockout facility provided to limit remote access, augmented by full remote control from a PC via USB, or RS485. The unit offer front panel recall of up to 20 memories, up to 16 of which are also available via closed contact GPI recall interface. A real time clock and calendar also allow for automatic recalls on either a one-shot or repeated weekly basis.