Pinnacle ProFire 610. Input impedance: 1000000 Ом, Maximum input level: 14.5 dBV, Signal-to-Noise Ratio (SNR): -107 dB. Frequency response: 20 - 80000 Hz, Audio quality: 24 bit, Sampling rates: 192 kHz. Microphone variable gain: 53 dB, Microphone maximum input: 28dBu, Microphone Signal-to-Noise Ratio (SNR): -108 dB. Headphones maximum output: 2.9 dBV, Headphones working range: 75 Ом, Headphones Signal-to-noise Ratio: -108 dB. Interface: FireWire