I have Wk1800's and WK1630's in the store and they certainly offer a good value for under $400.00 . The keyboard would shut off during the day . At GC we like to have evrything on all day . So this little Casio thing was always annoying . Well .....If you press the Tone and power on button at the same time ......the keyboard will stay on ! All day long ..........Thanks to Ed Alstrum National Product Manager at Casio ! Dan O
PS ...Just FYI for any casio users