The moment I put the Casio WK8000 on my floor, I turned off the Multi effex light, went to the "mixer" button, adjusted the Reverb down about 1/2 and stored this piano in the first user voice.
When my customers come in, I first show them the stock grand piano, let them hear it and then proceed to the user piano I created. The difference is huge. In my opinion, this is all that needs to be done to make the piano sound good. There is a gated reverb setting applied in the factory sound. I don't know why they did this but it was also in the WK3000, WK3500, WK3200, WK3700 and the newest WK's as well!
George Kaye
Kaye's Music Scene
Reseda, California