Yamaha YDP143B Arius Series Console Digital Piano with Bench, Black Walnut Description The Yamaha Arius YDP-143 is a great digital piano for any aspiring pianist. The Graded Hammer Standard (GHS) action combines with Pure CF sampling and Damper Resonance to recreate the depth and tone of an acoustic piano. The optional iOS app, Digital Piano Controller, makes navigation and configuration easier than ever. Features: The Pure CF Sound Engine faithfully reproduces the tone of a meticulously sampled, acclaimed Yamaha 9' CFIIIS concert grand piano, allowing for incredibly dynamic and expressive playing. GHS weighted action is heavier in the low keys and lighter in the high keys, just like an acoustic piano.Internal Memory - Total maximum size approx 900 KB. 50 classic piano songs are provided in the built-in song memory as well as in a music book, "50 Greats for the Piano." The Controller App for iOS devices adds a rich graphical user interface, allowing for quick and easy navigation and configuration. The 2-track song recorder allows players to practice one hand at a time, or record their next hit single!.Amplifiers:6W x 2 Product Details: Brand: Yamaha Color: Black Walnut Number of Keys: 88 Skill Level: Beginner Special Feature: Portable Item Weight: 108 pounds Product Dimensions: 56.2 x 22.2 x 17 inches Item model number: YDP143B Is Discontinued By Manufacturer: No Date First Available: April 4, 2016 Color Name: Black Walnut Number of Keyboard Keys: 88 Proficiency Level: Beginner