AEROBIX is a basic easy to use, straightforward and easy to control 1 Unit 19" rack mountable Stereo Rack Mixer. The perfect preamplifier designed for Aerobics, Bars and Restaurants. 2 Microphone inputs both on 6,3 mm Jack and XLR connectors. 2 Stereo RCA Line inputs. Adjustable auto talk over. Individual volume controls. Stereo Master output both on RCA and Balanced XLR.