The A-16CS Control Surface allows the A-16R Monitor Mixer to be mounted in a rack with power amps, wireless transmitters, etc., while allowing the performer to have complete control over the 16 channels of audio in the monitor mix. Features: • Sixteen Channel select buttons with dual LEDs • Dedicated Recall, Group, Solo, and Mute buttons • Save and Recall of the Sixteen user Preset memory locations in the A-16R • Pan/Spread con