Yes, but not only patch matrix, also VCO, VCF, (VC)ADSR, VCA ect. ect. controlled by AOUT dac.. Midiboxes Pots, switches ect. as control surface, providing Control Voltages and Gates ect. to each module. :) This could provide full control of analog synth, with memory storage and automation :) But back to original request for comments: Maybe Thorsten could provide some information what he has on his mind?! Things that I have in mind: dac resolution: What is suitable resolution, so control of analog modules would be smooth?! (and is data type supported by MIOS?) dac latency: How long dac conversions are going to take? voltage levels: What is going to be voltage range? How easy is it to adapt to, for example 0-10v range to control VCO's with note data with precision? Anyway, comments welcome!! moebius