Expressive and Responsive Hammer Action keypad for an acoustic piano feel and touchDeep and Rich three layer grand piano sample for true realistic grand piano sound16 different instrument voices with customizable effects and 3D stereo instrument samplesUSB to Host and class compliant USB connectivity, MIDI Out, Stereo Line In and Out and morePortable, works on Batteries or Adapter plus includes both the Sustain Pedal and Power Supply