61 touch-sensitive keys
1337 sounds + 56 drum/SFX Kits + 480 XG sounds
Quick access with 7" color touch screen
MIDI and audio recording (WAV/MP3)
1GB internal memory
Joystick and FSBkeyboard
Microphone/guitar input
Built-in speakers 2 x 15 Watt
Also available as a starter kit 



Yamaha The PSR-SX900 is a professional workstation equipped with a host of features that make this keyboard  your ultimate musical partner, whether on stage, in the studio or at home.
The PSR-SX900 arranger workstation benefits from the technology that comes from the development of the Yamaha flagship Genos.
Yamaha The PSR-SX900 is the foundation and design for enhanced musical performance, creativity and, ultimately, enjoyment.
 
See also Yamaha PSR-SX700: