The Yamaha DGX 640 is the big brother of the Yamaha DGX 530 and is overall the superior instrument. The DGX 640 comes with a 88-key Graded Hammer Sta for Sale in
Yamaha DGX640 Digital Piano, Walnut - Keysound
Yamaha DGX-640 with Stand | Reverb
Yamaha DGX-640 rosewood portable grand piano keyboard 3 pedals stock # – Sulinda Music
Amazon.com: MyVolts 12V Power Supply Adaptor Compatible with/Replacement for Yamaha DGX-640 Keyboard - US Plug : Musical Instruments
Hands On Review of the Yamaha DGX-640 Digital Grand Piano | Piano, Grand piano, Digital piano
DGX-640
Yamaha DGX 640 88 Key Digital Piano - Cherry | Reverb