I have one of the first Genos, never upgraded.
I sent the the main outputs, the microphone and right hand separately to the mixer.
The gain on the mixer is set differently for each output.
I use Registrations, I set them up in a way that there is not a drastic change of volume from one to another, unless I want to.
You should set the gain to respond to the input.
I have a studio in the basement, my wife tells me the house is shaking!
QSC Touch mixer 16
BOSE L1
I am not an "engineer"