Yamaha S90

Yamaha S90

The Yamaha Music Synthesizer S90 is a synthesizer and a MIDI controller in one unit, released in 2002 to supersede the S80. As such, it is part of the S series together with the S03 and S08. It was superseded by the S90ES in 2005, itself superseded by the S90XS in 2009. It is notably one of the few digital 'modular' synthesizers with 88 weighted keys. To what extent the S90 is modular may be a topic of controversy in comparison to analog modular synthesizers as parts of its modularity is plug-in based and not applicable in real time. However, it is still possible to view it as a hybrid modular type in conjunction with software use (see Modular synthesizer).