Frequency Response (at 1 kHz, channel controls centered): 50 Hz to 20 kHz +/- 2 dB; -3 dB corner at 25 Hz <br />Total Harmonic Distortion: <0.1% at +4 dBu output level, 50 Hz to 20 kHz (through 22 Hz to 22 kHz filter; Input at 12 o' clock and Master at 12 o' clock, all other controls full counterclockwise)<br />Hum and Noise (150 ohm source; through 22 Hz to 22 kHz filter): Equivalent Input Hum and Noise: 123 dBV max., 125 dBV typical<br />Output Hum and Noise (channel controls full counterclock-wise): Master full counterclockwise: 90 dBV: Master full clockwise: 70 dBV<br />Common Mode Rejection: >70 dB at 1 kHz<br />Polarity: All inputs to all outputs are non-inverting<br />Input Channel Activation: Attack Time: 4 ms; Hold Time: 0.4 s; Decay Time: 0.5 s<br />Off-Attenuation: 13 dB<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 (3V)<br />Equalization: Low-frequency: 6 dB/o