60W amplifier

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 transformer coupled- Output jack to connect a recording device or booster amplifier- Output jack to connect a general-purpose 600-ohm matching transformer model WMT1A- Thermal protection and electronic shutdown- Rack mountable with accessory mounting kit model RPK50- Listed to UL standard 60065 for US and Canada