Sorry but the MIDI mono mode doesn't make the obie multitimbral, beyond the two patches available in a split. Unfortunately it also disables spillover, so you can't send notes on to other synths either. What is d o e s do is allow you to send various controller messages on one or more channels and not the others, which is useful in mimicing the playing texture of a guitar, for instance.Each channel would represent one string. Hope this helps.mn