This may also be relevant to your interests.
http://www.alowhum.com/deluge-synthstrom.html
from a thread on Muffs:
Soon to released sampler+synth machine. M
Has SD card for samples and built in FM synth and analog synth engine.
32 voice polyphony step sequencing mono and poly parts.
MIDI out+IN and CV gates.
I’ll start a new thread on this one for discussion.