Yamaha Synth have announced two new synths designed specifically for players. The ultimate keyboard instruments for performing and creating. Exceptional quality instrument sounds. A piano sound to die for. A truly realistic, naturally expressive keyboard. Convenient, comprehensive control. Real-time controls for tweaking of the sound as you play. Audio recording to USB memory. Extensive computer music features. Ease of use, plus compact size and portability. Introducing the S90 XS and S70 XS Music Synthesizer.