Casio WK-7600 Musical KeyboardEffector and everything else you need to create exactly the sound you want Drawbar Organ Function The keyboard comes with 50 specially selected built in drawbar organ tones. Nine sliders can be used to change harmonic overtone level settings and add percussion and click sounds for real time sound creation as you play. A rotary speaker simulated using a built in DSP provides the distinctive acoustic effect of drawbar organ speakers. Parameters can be