Model 742A, Audio Rack Mixer. Rack mixer with 4 line inputs and 4 mic/line inputs with XLR3F connectors and 48VDC phantom power. Input controls are provided for level and switches for output selection. Signal/peak LED indicates the signal level of the inputs. 2 master outputs with compressor, connectors XLR3M. Dual outputs for both monitor and headphones with level control, TRS connectors. Built-in tone generator. Supply voltage 100-240VAC/10-18VDC