Avid MBox Pro w/ Pro Tools. Microphone Signal-to-Noise Ratio (SNR): -110 dB, Line Signal-to-Noise Ratio (SNR): -112 dB, Frequency response: 20 - 20000 Hz. Input impedance: 20000 Ом, Microphone input impedance: 3600 Ом, Maximum input level: 10.98 V. Balanced line output level: 10.98 V. Bundled software: Pro Tools 9