E3463 Premium RD stage piano with two independent sound engines and modern controller features Expandable sound engine powered by advanced Roland V-Piano modeling technology for authentic, richly detailed tone and full polyphony Comes with two V-Piano Expansion titles pre-installed: German Concert and the newly developed Essential Upright SuperNATURAL sound engine with 128-voice polyphony for electric pianos and additional sounds Deep real-time control with nine sliders and eight encoder knobs with LED status indicators Brand Roland Color Black Number of Keys 49 Skill Level Professional Special Feature Weighted Keys