The Kawai ES100 Digital Piano is built with their successful “Harmonic Imaging Sound Technology,” sampling the 88-keys to come as close as possible to their 9-foot Kawai concert grand piano. The Kawai ES-100 Digital Piano is designed using its Advanced Hammer Action IV (AHAIV-F) is an 88-note, “graded” keyboard, formed from extremely accurate stereo “maps” of sections through the entire dynamic range of the original piano. Touch and response authentically reproduces the feel of a grand piano.