... 3, frequency response frequency response: 20Hz-20khz 4, maximum output level Max output level: 20dBm 5, harmonic distortion T.H.D: ≤ ... / 8/12/16 channel mono microphone and line balance input. 3, channel settings the INSERT and gain switch, 3-band EQ. 4 ... . 6,2 group recording input and output, and listen to the headphone output. 7,1 group master (line) output and mono output. 8, digital effects reach ...