Allen & Heath ZED14 AUX SENDS 3 and 4 PRE-Fader

Hey everyone, I’m looking for instructions to have AUX SENDS 3 and 4 changed to PRE-Faders instead of post faders like original.

On the PCBs there are some pads (naked Cu) marked JS1 POST and JS2 PRE …

Any Idea?

Thanks in advance, ghego