Donner aim to create new experiences in music and performance. DDP-90 88 key full-size heavy hammer weighted key, which truly restores the real feel of the original piano, cultivates your interest in the piano, helps you train a good performance posture, and makes progress in the fastest time. Donner DDP-90 pure tone piano, using AWM sampling, more realistically restored the sound of the original grand piano, can effectively train the ability to distinguish sound. Whether you are on stage or room , you can play your favorite music through headphones and amplifier, immersed in the world of music. And the powerful speaker system is designed to envelop the listener, audience and room with rich, detailed sound. Relying on its strong and efficient research & development team, Donner is resolved to continue to create innovative and excellent instruments which maintain the high quality that inspires professional artists and creators.Just make your own music with Donner digital piano! Specifications : Power Adapter?12V/DC, 3A Package Size : 144.5CM * 44CM * 36CM / 56.89? * 17.32? * 14.17? Package Weight: 38.2KG / 84.33 Pound Key Material: Plastic & ABS Body Material: Medium Density Fiberboard (MDF) Pedal Material: Metal Package Included: DDP-90 Digital Piano X 1 Power Adapter X 1 Product Manual X 1