Frequency Response (Ref 1 kHz, channel and master controls centered)<br />MIC/LINE Inputs: 150 Hz to 20 kHz +/- 2 Db; AUX Inputs: 20 Hz to 20 kHz +/- 2 dB<br />Low-Cut Filter (Microphone inputs only); 3dB down at 80 Hz, 6 dB/octave<br />Inputs: XLR, Line, Stereo<br />Outputs: XLR, Line, Aux<br />Total Harmonic Distortion: <0.25% at +4 dBu output level, (through 22 Hz -- 22 kHz filter; MIC Input 1 and Master at center, all other controls full counterclockwise)<br />Equivalent Input Hum and Noise(150 W source; 22 Hz -- 22 kHz): -125 dBV<br />Output Hum and Noise (22 Hz -- 22 kHz; channel controls full counterclockwise): Master full counterclockwise: -85 Dbv; Master full clockwise: -60 dBV<br />Common Mode Rejection: >70 dB at 1 kHz<br />Polarity: All inputs to all outputs are non-inverting.<br />Overload and Shorting Protection: Shorting outputs, even for prolonged periods, causes no damage. Microphone inputs are not damaged by signals up to +10 dBV; Line and Aux inputs by signals up to