MZ-223 3-Zone Install Mixer with 5-Line and 2-Mic Inputs 2UThe MZ 223 is a rackmount mixer designed for fixed installations in shops, public facilities, restaurants, bars, theme parks or hotels. It can be used to send background music and announcements from a variety of sources to three different rooms or zones. Each of the seven input channels can be routed to any or all of the three output zones. The mixer offers five stereo input channels for line level signals from analogue playback sources like media