Utilisation entrée micro 1 et 2 pour connection synthé + bar???

The mic level range extends from no signal up to about -20 dBm(77.5 mV across
600 ohm). It is used for the outputs of microphones, guitar pickups, phone cartridges,
and tape heads, prior to any form of amplification. The mic level is for low level outputs.

The line level extends from -20 dBm(24.5 V across 600 ohms = 1 watt).
It includes synthesizer outputs, preamp and console outputs, and signal processing
outputs; limiters, compressors, signal delays, reverbs, tape decksand equalizers.
The line level is for medium level outputs.

If you plug a line level output into a mic level input you will get distortion, possibly
some clipping and overheating the mic level preamp.

To avoid any distortion and/or clipping you should reduce the line level output by
using a 20 to 50 dB attenuation pad.or you can find an insert or patch jack in the
mic input circuit after the mic preamp and connect the line input there.