The QSC Q-SYS I/O Frame Type 2 with 16 outputs and 4 CoL4 Line Cards is a versatile multi-effects processor designed for professional audio applications. This rack-mountable unit offers digital signal processing capabilities with active features and 16 channels for various sound effects. With a compact 1U rack unit height, this model from QSC is ideal for use in musical instruments, musical equipment, and pro audio setups for creating high-quality audio effects.