HQ Power 2-channel mixing panel. Line Signal-to-Noise Ratio (SNR): 80 dB, Frequency response: 20 - 20000 Hz. Input impedance: 27 Ом, Microphone input impedance: 2000 Ом, Maximum input level: 0.15 V. Total Harmonic Distortion (THD): 0.02 %. Dimensions (WxDxH): 240 x 166 x 112 mm, Weight: 1100 g