Ensoniq SQ-2

The Ensoniq SQ-2 is a velocity and pressure sensitive 76 key (21 voice, 24 channel multitimbral) synthesizer, featuring 167 waveforms, dual multimode digital filters, three 4-stage envelopes, an LFO, versatile modulation, stereo effects, 8 track (+ 8 track song) real or step time sequencer, auxiliary outputs, and MIDI. The 80 user editable presets can be saved via MIDI SysEx, 3.5" DSDD disk drive, or cartridge (another 100 presets are in ROM).  This unit comes with an expansion card with additional sounds, midi cables, and audio cables for connectivity to amplifier or speakers.
Demo here:  https://www.youtube.com/watch?v=l_DrZJbJ-PI