YAMAHA SY77 Music Synthesizer Keyboard Polyphony - 32 voices: 16 AFM voices, 16 AWM2 sampler voices Oscillators - 6 operator AFM synth with 45 algorithms, 3 feedback loops and 16 waveforms; 16-bit AWM2 sample ROM waveforms Filter - Multi-stage Time Variant Filters with resonance, Arpeg/Seq - 16 track sequencer, 16,000 note capacity, 99 patterns, 1 song, 61 built-in drum sounds Effects - 4 independent digital effects processors,Keyboard - 61 keys with velocity and aftertouch Memory - 128 preset & 64 user patches, 16 preset & 16 user multi-patches, Control - MIDI