The TOA A-906MK2 Mixer Power Amplifier controls and mixes up to eight independent input signals and delivers up to 60W of output power. Optional plug-in modules are available for use with the A-906MK2 to provide a full range of operating applications. The use of edge connectors on the rear of the unit permits selection from a wide assortment of TOA plug-in modules. A remote master volume control is provided, functioning with an external potentiometer. A two-level muting function is available with optional modules. The A-906MK2 has output terminals to match 4-8 Ohms speaker systems and 25-70V constant voltage speaker distribution systems. An optional rack mounting bracket is available.