The RD-88 EX delivers a premium RD stage piano experience with expanded sounds and supreme playability. Perform at the highest level with SuperNATURAL and ZEN-Core engines and our expressive PHA-4 hammer-action keyboard. Freely combine internal sounds with computer-based virtual instruments. And perform anywhere with the portable design and room-filling stereo speaker system. Professional RD stage piano with expanded sounds, including the SuperNATURAL Acoustic Piano 3 Expansion Acclaimed SuperNATURAL pianos and electric pianos ZEN-Core engine with over 3000 additional sounds, including organs, synths, strings, brass, and more World-class playability with the 88-note PHA-4 keyboard with hammer action and Ivory Feel Room-filling onboard stereo speaker system Convenient built-in rhythms for jamming and performance USB audio/MIDI interface and dedicated control mode for working with Apple MainStage USB memory port for MP3/WAV audio playback and data backup