A fantastic sounding keyboard workstation from 1991 that employs Yamaha's classic DX7 technology (essentially FM synthesis engine) combined with 16 sampled waveforms. The FM side also features 16 distinct waveforms with 45 adjustable algorithms. Resonant, analog style Time Variant filters add deep, rich, sweeping textures. This versatile instrument also offers a 76-key touch response keyboard (with aftertouch), combined with a powerful 16-track. 16,000 note sequencer (32 voice polyphony), as well as four independent digital effects processors. There are 128 on board presets, in addition to 64 fully programmable user patches and even multi set-ups (16 x 16). Memory can be expanded via floppy discs and PCM memory cards. Two independent modulation wheels allow some unique performance accents. Overall, this unit is in good condition, though there are some smudges and a couple of cracks on the back/bottom corners (pictured).