Abstract: A production mix controller for processing and mixing audio signals has a control console separate from an audio mainframe. All audio signals to be mixed are confined to the audio mainframe, and the control console has channels of input devices providing low-voltage input control signals, which are converted to digital signals and stored by a microprocessor-based control system. The control system includes menu selectable functions for setting control modes and routing signals. Digitally controlled analog audio control devices at the audio mainframe are controlled by digital signals retrieved from memory and communicated to the audio mainframe, making the system software controllable. The invention includes functions for block copying arrays of input settings, and facility for storing and retrieving digital snapshots of entire configurations. Input controls are arrayed in channels, and channels are arranged in removable pod modules for modularity.