6.6.1If Channel Clipping Occurs
If the signal is clipping or producing audible distortion, the gain is too high. Reduce the Input Gain by turning the knob counterclockwise until the Clip LED does not illuminate. If the signal cannot be reduced below clipping with the Input level control at minimum and the input source is not a microphone, change the Input setting to Line to pad the signal to a lower level.
Also, make sure that the new Input Gain setting offers a usable control range between the 0 and -20 dB positions on the channel slider volume control.