Yamaha S90ES Synthesizer

Is the S90 ES an 88-note weighted action digital piano with the sonic flexibility of a synth or a synthesizer with the best sounding piano samples ever available? Actually, it's the perfect balance of both. The new multi-velocity stereo samples of Yamaha's hand-built S700 grand piano, the damper reverb effects, and half damper capability all ensure the S90 ES has the most expressive acoustic piano sound Yamaha has ever offered in a synthesizer.