Befaco StMix​​​​​​​ is a compact four-channel stereo mixer for audio signals , but can also be used in mono mode. The value-processed module adds up to four stereo or mono signals and outputs them at the stereo output or sends the sum via a ribbon cable to the (separately available) Hexmix system of Befaco .
An additional Aux input functions as a fifth input without level control or for looping through another Mixer module.