
via this auction
"Features of the ProMars include:
Two individual VCOs that can be detuned, plus a separate sub oscillator and a White noise generator.
A great twin VCF with HP and LP. The filter has its own ADSR envelope which can be inverted.
VCA section, with own ADSR envelope. Fast and punchy.

LFO section with multiple waveforms. Superfast for great FM/Ringmod style effects.
Modwheel can be assigned to VCO, VCF and VCA.
Keyboard transpose - up or down an octave.
Includes 10 preset sounds, much like the Jupiter 4. These can be tweaked using the separate brilliance filter control.
You also get 8 user memory slots that can be written to to save your favorite patches.
CV and Gate in and out gives you plenty of control options."