Kawai KDP90 Digital Piano Harmonic Imaging Sound Technology88-key Piano SamplingAHAIV-F Graded-hammer Action15 exceptional instrument soundsDual and Four-Hands modes192-Note PolyphonyBuilt-in Alfred Piano LessonsGrand Feel Pedal SystemSliding Key CoverBuilt-in Stereo Speaker SystemSustain pedal sold separately Kawai's exceptional line of digital pianos is a direct result of their determination to create some of the world's most authentic and innovative digital pianos Relying on a rich experience in building fine acoustic pianos, Kawai builds digital pianos that offer some of the finest tone and touch available Wooden-key actions, Harmonic Imaging sound technology, USB digital audio and the unique Soundboard Speaker System are just a few of the innovative features found Kawai digital pianos and keyboards ToneThe KDP90 utilizes Kawai's acclaimed Harmonic Imaging Sound Technology, featuring 88-key piano sampling, to create its impressive piano sound