Each unit is provided with a long gooseneck condenser microphone which is highly sensitive and unidirectional. The microphone is provided with a diffused LED housing to provide positive visual identification of the unit in operation. The built-in speaker in each unit provides clear and crisp sound reinforcement. The output level of the speaker can be adjusted through a recessed volume control in the unit. Each unit has a headphone output, TALK switch and a TALK LED. The MIC LEVEL LED in the delegate unit flickers to indicate microphone input signal level.