Donner DDP-400 Hammer Action Digital PianoDonner DDP 400 Compact Piano for Family and Concert Taking inspiration from the elegant and curvaceous cabinets of traditional pianoswith a modern twistthe DDP 400 brings sophistication to any home or concert. The small high box design expands the speaker resonance box, which can restore the warm and thick sound texture and the empty sound space of the acoustic piano. Plus, with compact dimensions, a smaller footprint, and a lighter weight than a