The Allen & Heath Qu-16 Rackmountable Digital Mixer is a 16-channel digital mixer and USB audio interface designed for live and installed sound as well as studio use. It features 16 mic or line selectable inputs and 3 stereo line inputs. Its 16 anaLOGIQ microphone preamps have digitally recallable settings that can be saved and recalled for future sessions. The Qu-16 has a variety of output options, including 4 mono XLR mix outputs, 3 XLR stereo-pair mix outputs, an alternative TRS stereo-pair mix output, a TRS stereo-pair 2 track output, and a 2 channel AES digital output.