The Yamaha SY55 is a synthesizer/sampler workstation released by Yamaha in 1992. It was used by a variety of artists, including Nine Inch Nails, The Prodigy, and The Chemical Brothers.
The SY55 is a 16-voice polyphonic synthesizer with a 61-key velocity-sensitive keyboard. It features a built-in 16-track sequencer, a variety of effects, and a wide range of sounds. It also has a built-in sampler, allowing users to sample their own sounds and manipulate them. The SY55 also has a variety of performance features, such as arpeggiators, real-time controllers, and a variety of modulation options.