The two fuzzes share the same controls. The Fuzzes and EQ are slightly differents (great for strereo).
You can output the Stereo signal by plugin a stereo cable or you can output a mono signal : Fuzz1 - clock wise or Fuzz2 - counterclock wise, or a mix of the 2 fuzzes by turning the morphing pot.
Very characteristic for the module´s sound if the feedback that is coupled to the Fuzz. The more fuzz, the more feedback - the Strakal Silisiom can get pretty nasty and it screams a lot at high fuzz settings and low input level. The fuzz amount can be voltage controlled, morphing also. Can be use as a mono Dual fuzz or a mono input / Stereo output Fuzz.