35 watts 4 inputs: 1 MIC (Lo-Z), 1 AUX (Hi-Z), 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 voiceactivated AUX mute Outputs for 4-ohm (direct), 8-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 U.S. and Canada