The psr-sx900 61-key high-level arranger keyboard from yamaha features content from the flagship genos digital workstation and sounds stellar through its updated bi-amplified speaker system with a wide-stereo audio field. it can be used by musicians to create a huge variety of sounds with musical versatility to get the room moving at the gig or to create your next potential hit in the studio.navigate the psr-sx900 arranger using the 7" tft touchscreen, or setup the assignable buttons to access your preferred functions. other features include: a joystick controller, a chord looper, updated keyboard action inherited from yamaha synthesizers, an insertion effect structure, and a style section reset. the psr-sx900 helps you make music easier and sound better too.take your performance to a whole new dimension with the psr-sx.