Yamaha
The Yamaha SY77 is a 1989 16-voice multitimbral workstation combining AFM (expanded 6-operator FM), AWM2 PCM sampling, and their real-time hybrid RCM. It features a 61-key keyboard with velocity and aftertouch, two modulation wheels, pitch wheel, backlit LCD, floppy drive, expansion slots, on-board effects, and a 16,000-note sequencer. AWM2 waveforms can be used standalone, layered with FM Elements, or — uniquely in the SY/TG series — as modulators for FM operators. Its AFM is a superset of the DX7’s FM, adding waveforms, algorithms, feedback routing, and filter integration.