... 3, frequency response frequency response: 20Hz-20khz 4, maximum output level Max output level: 20dBm 5, harmonic distortion T.H.D: ≤ '3 ... mixer 2, 6 / 8/12/16 channel mono microphone and line balance input. 3, channel settings the INSERT and gain switch ... ,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 ...