The MX622 is a rack-mountable audio mixer from ART with three microphone inputs, three stereo RCA inputs, two bands of EQ, and an effects loop. It allows you to mix several audio sources into two stereo outputs. Each mono-balanced XLR input has a fully variable input gain, mic/line switch, clip indicator, and selectable 15V Phantom power. The external effects loop provides a mono send from the three Mic/Line channels to external equipment and a stereo return with effects level and In/Out switch. The mixer will fit into a standard 19” rack making it ideal for installed sound systems. The controls are clearly labeled and arranged logically, making this mixer very intuitive and easy to control.