Q-SYS QIO-L4o Network Audio Mic/Line I/O ExpanderThe Q SYS QIO Series network audio I O expanders extend your Q SYS system's capabilities and enable streamlined interoperability with non networked audio devices. By separating local I O from processing hardware, the QIO Series offer modular and easily scalable network I O to support your desired topology. There are three models that offer mic line connectivity to integrate consumer or professional audio devices into your Q SYS system.