Our contractor series three channel mixer/amplifier is a 60 watt amplifier. It features an auto mute function, music on hold output with separate level control (600 ohm line and one watt 8 ohm), 600 ohm telephone line input with level control, bass/treble tone controls, front panel level controls, and manual muting contacts.<br><br>In addition to the telephone line input, this unit accepts inputs from three sound sources. Each source can utilize a choice of microphone inputs (terminal strip) or auto summing stereo auxiliary RCA inputs. Mic 1 also contains an input for an XLR connector.<br><br>Outputs include a choice of 4, 8, and 16 ohm as well as 70 and 25 volt line outputs. There is an auxillary output connection as well.