Sound Devices’ MM-1 is a single-channel, portable microphone preamplifier with a headphone monitoring function. The high-performance microphone preamplifier uses a transformer-balanced input and output with a bipolar ±15 volt power supply to produce low-noise, low-distortion gain at all switch positions. It features an “unclippable” dual-stage limiter and two-position high-pass filter. Flexible microphone powering provides phantom power at 48 volts or 12 volts and 12-volt T-power.

• Balanced XLR I/O

• Selectable 48-volt / 12-volt phantom power or 12-volt “T” power

•High-pass filter

• Headphone monitoring of microphone audio, monitor audio, or a mix of both

• Monitor input accepts mono, balanced or unbalanced line-level inputs on 1/4-inch tip-ring-sleeve connector

• Powered by 2 AA batteries or external 5-17 VDC