O PSR-SX900 é o carro-chefe da série PSR-SX. Superado apenas pelos Genos, este teclado de composição e desempenho da casa de potência nunca antes visto tecnologia de alto-falante, conectividade pró-nível e uma interface de usuário completamente redesenhada.   Color/Finish Body Color Size/Weight Dimensions Width Height Depth Weight Weight Packing Box Width Height Depth Control Interface Keyboard Number of Keys Type Touch Response Other Controllers Joystick Control Knobs Pitch Bend Modulation Display Type Size Touch Screen Color Language Panel Language Voices Tone Generation Tone Generating Technology Polyphony Number of Polyphony (Max.) Preset Number of Voices Featured Voices Compatibility XG GS GM GM2 Expandability Expansion Voice Editing Part Effects Types Reverb Chorus DSP Insertion Effect Master Compressor Master EQ Part EQ Others Arpeggio Vocal Harmony Number of Presets Number of User Settings Accompaniment Styles Preset Number of Preset Styles Featured Styles Fingering Style Control Other Features One Touch Setting (OTS) Chord Looper Style Section Reset Unison & Accent Expandability Expansion Style Expansion Audio Style Compatibility Songs Preset Number of Preset Songs Recording Number of Songs Number of Tracks