The Pure Resonance Audio PRA-RZMA120BT 120 Watt Rack Mount 4 Zone Commercial Mixer Amplifier with Bluetooth is a powerful and feature-packed unit equipped with built-in MP3, FM tuner, Bluetooth and recording capability. Featuring 4 x 120-watt output capability at 4 Ohm, 70 and 100 Volts, this multi-zone mixer amplifier is full of power. It is designed with advanced matrix technology that allows four-zone selectable inputs to be assigned to a zone, or across multiple zones with the push of a button. A monitor channel provides a 1-watt 8-ohm output for a control room monitor speaker. A convenient IR remote is available for volume and source control, and remote microphones can be daisy-chained via Cat5 for zone paging.