The Ensoniq ESQ-M is a vintage synthesizer, the rackmount version of the ESQ-1, that offers eight voice polyphony. It can do basic splits and layers which can be saved as part of a patch.
Each voice features three digital oscillators, an analogue filter (a Curtis chip) three LFO’s, four envelopes, and four Digitally Controlled Amplifiers and a very serious modulation routing ability.