Poly D from Behringer is based on their own Model D, which in turn is based on Moog’s MiniMoog Model D, but expanded in quite a few ways. It has four oscillators instead of three, and they can be played paraphonically or polyphonically depending on your definition of those terms; it has a sequencer and arpeggiator, and a velocity sensitive keyboard with aftertouch, as well as analog distortion and delay circuits.
Here’s my full review, workflow tutorial as well as a few patch ideas:
4:50 Auto damp
17:05 Filter env
27:40 Tips & ideas
31:00 Pros & cons