Analogue mixing desk series behringer xenyx dimensions 18 x 705 x 54 cm weight 117 kg number of channels 24 number of mono channels 16 number of stereo channels 4 subgroups 4 aux sends 6 aux returns 2 channel inserts 20 microphone inputs 20 direct outs 20 equalization 4 band eq with 2 param mids phantom power