1) Digital. . not bothered what type of digital. FM, virtual analogue, whatever...
2) Multitimbral (at least 3 timbres at once, not layered together but rather each playing a different pattern / on a different midi chan.)
3) DC power supply input (so something with an external power supply that could be replaced by a battery) - or something that is natively battery powered.
4) No more than 37 keys, preferably no keys at all.
5) Doesn't sound s**t
The closest I can find is the korg R3 which is only 2 timbre multitimbral. I guess it may have to do though - perhaps I could use an R3 and a micro modular since that wont really add any extra size/weight to the setup.
So, any ideas?

thanks in advance.