• Front panel overall volume control and treble/bass controls
• Rear panel selector switch for enabling/disabling front-panel tone and
volume controls
• Constant voltage (50/70/100V) or 8Ω impedance loudspeaker line output
• LED-type VU meter for clear and immediate monitoring of output power
• Contacts for activating precedence on line input
• Alerting signal (chime) with level control
• Selectable 230/115Vac and 24Vdc mains power supply
• Balanced line in/out (XLR-F and XLR-M sockets)
• Unbalanced line input (dual RCA socket)
• MBT 1101 microphone station input (RJ45 socket)
• Telephone/Emergency audio input for priority calls with adjustable
threshold and sensitivity