One owner, non-smoker, always covered. Mint Condition. The Yamaha S90 XS is a discontinued professional 88-key music synthesizer and stage piano featuring a Balanced Hammer Effect keyboard with initial touch and aftertouch. Key Specifications & Features • Sound Engine: Powered by AWM2 with Expanded Articulation (XA), incorporating all voices, performances, and Virtual Circuit Modeling (VCM) effects from the flagship Motif XS, plus 142MB of dedicated acoustic piano waveforms sampled from the Yamaha S6 concert grand. Polyphony: 128 notes maximum polyphony. Control: Real-time physical controls including assignable knobs, sliders, and top-panel categorization for rapid splits and layers via the Performance Creator. Audio Recording: Direct audio capture (WAV 44.1kHz, 16-bit, stereo) to USB storage or 192MB of internal flash memory. Inputs: Combo input jack supporting microphone or guitar signals with dedicated gain control and effects. DAW Integration: Comprehensive computer music features with DAW Remote mode supporting 50 control templates.