The Promix Plus (model # MX54S) mixes three microphones and provides the mix two transformer balanced XLR outputs. It has three XLR inputs, each with individually switchable phantom power, low cut switches and level control. A 1/4″ aux/headphone output has been provided along with a clip indicator, power indicator and power switch, and the unit is powered by two 9-volt alkaline batteries. It can also can be powered via AC (power supply included).