Item is brand new and unopened. 50V, 70V, 100V and low impedance 4-16? loudspeaker output Four balanced XLR microphone inputs with phantom power, selectable priority, gain and volume control 4 stereo RCA line inputs with front panel selector switch Built-in chime function with 2/4 tone selector and external trigger contact Balanced XLR line output suitable for use with external power amplifiers REC output for audio recording PRE-AMP output and PRE-AMP input for extra signal processor Master, MIC 1-4, AUX volume controls Bass and treble controls Optional DC input for use with battery backup power sources or for operation using high capacity batteries LED VU meter with peak indication