M-Audio MobilePre USB Mobile Preamp and Audio Interface 2 x 2 16-bit/48kHz analog I/O with preamps 2 microphone inputs (XLR balanced) with 48v phantom power 2 high-impedance instrument/line inputs (balanced/unbalanced 1/4" TRS) Zero-latency hardware direct monitoring (mono/stereo) with software level control USB-powered for total mobility