The MX124 Pro-MixIV mixes microphones into two transformer balanced outputs. It has 4 XLR inputs, each with individually switchable phantom power, and Low Cut switches, Level control, and Pan control. As mentioned, it has two transformer balanced, XLR outputs. 1/4 inch Aux/Headphone output has been provided along with Clip indicator, Power indicator, and Power switch. The unit is also powered by two 9-Volt alkaline batteries.