Features: Two microphone inputs, two auxiliary inputs and two AUX out for line. Transformer isolated 240V, 110V, 70V and 4-16 Ohms speaker outputs. Muting function. Individual volume control and master volume control. Low and high tone control Output circuit shorting protection alarm. Chime output.Frontpanel: Power switch. Power indicator LED LED level meter Clip Z1 switch Z2 switch Z3 switch Z4 switch Master volume control Treble control Bass control AUX 2 volume control AUX