The Yamaha DGX-660 Digital Piano builds up on a standard piano and provides you additional features like a 6-track recorder, on-screen score display, wireless audio streaming, and more. Yamaha DGX-660: PROS & CONS Pros: Piano Like Keys (Graded Hammer Standard), full featured, Good Sounds & Styles, Lots of features, Pricing Cons: Slightly heavy. Overall volume […]