Peavey MA Series Module MPT-X is a transformer balanced mic preamp with XLR input. It features an input sensitivity control that adjusts the input gain of the module, and a gain control that varies the overall output level. The MPT-X has a frequency response of +1 dB from 30 Hz to 20 kHz, and an EIN of -123 dBu (20 - 20 kHz) with a 200 ohms terminated source impedance. It also provides phantom power of 24V DC, and has a mute function that can be set to either mute master or mute slave.