The NE4400 functions as a system processor for professional audio systems in environments such as houses of worship, corporate facilities, and hospitality venues. Its powerful 32-bit SHARC floating-point processors provide a comprehensive suite of DSP tools, including a matrix mixer, equalization, filters, dynamics control, and automatic feedback suppression. The unit is a chassis with standard analog line-level inputs and outputs but is expandable with four option bays that can accommodate cards for mic preamps, Dante, CobraNet, or AES/EBU digital audio.