Sure, because only the keyboard and the wheels are able to generate MIDI.
All the other knobs and faders are hardwired to the analog section of the synth with no digital encoding/position scanning in-between, so none of those controls generate MIDI.
So, all current MiniBrute(s) and MicroBrute(s) are able to work as *note* MIDI velocity and channel aftertouch keyboard controllers plus PitchWheel and ModWheel but nothing else.