- 3 models: 35 60 and 100 watts- 4 inputs: 1 MIC 1 AUX 1 TEL plus 1 selectable MIC or AUX- Each input controlled by an independent volume control- Treble and bass controls- AUX muting by external contact closure for push-to-talk microphones- TEL input for telephone paging applications- TEL input voice-activated (VOX) mute over AUX input- Variable threshold for TEL input voice-activated AUX mute- Outputs for 4-ohm (direct) 8-ohm (C35 & C60 models only) and 16-ohm 25V and 70V speaker systems (transfor