I have the wk 3000, and record just fine...using the headphone out jack on the Casio, to the computer's line in. I cann't tell you if it is as good as the 3500 outputs, but it is a good sounding recording...to me. It would be different in that it is a 'powered' output...adjustable with the Casio volume control. So, it can be 'balanced' ..or overdriven...if you turn up the volume too high.