The MX54s Pro-Mix Plus mixes three microphones into two transformer balanced outputs. It has three XLR inputs, each with individually switchable phantom power, and Low Cut switches, a Level control, and a Pan control. As mentioned, it has two transformer balanced, XLR outputs. A 1/4 inch Aux/Headphone output has been provided along with a Clip indicator, Power indicator, and Power switch. The unit is also powered by two 9-Volt alkaline batteries. Features: Mixes three microphones to stereo XLR outputs Output level controls for mic or line-level output Transformer isolated outputs Phantom Power and Low-Cut switches for each Mic input Battery and AC powered Handy shoulder strap mounts Specifications: Input Impedance: 600 Ohms Output Impedance: XLR 600 Ohms THD + Noise: .02% S/N Ratio: 84 dB Frequency Response: 25 Hz - 16 kHz (+0 / -3 dB) Max Output Level: + 14 dB Max Input Level: -14 dB Max Gain: +60 dB Low Cut: -3 dB @ 100 Hz Current Draw: 20 mA Phantom Power: +18 VDC Connectors: 3: Female XLR, 2: Male XLR, 1: 1/4" TRS, DC Power Jack Size: 5.3" x 3.7" x 2" Weight: 1 lbs.