The ne24.24M uses modular expansion cards to provide up to 24-channels of audio matrixing and processing. Protēa ne24.24M’s base unit offers a 4-input/4-output configuration. Each input and output expansion card has an individual DSP processor allowing you to expand the total input or output 4 channels of DSP processing at a time. Matrixing allows you to route any input to any output and control individual levels once they have been assigned.