Quoting we are <gateswideopen(a)gmail.com>om>: If you have the original multiface, see page 78 on the manual: http://www.rme-audio.com/english/download/mface_e.pdf You need to open up the box and switch some jumpers to change the analog gain. If you have the new multiface II, you only need to use the switches in the front panel. Sampo