You can set an FC3A, FC4A or FC5 sustain pedal to control the speed of the CK rotary speaker effect. This is great for players wanting to keep both hands on the keyboard during organ performance. Check out the video below learn more:

The CK Series one-to-one user interface allows direct access to important features. The dedicated [MONO] and [TYPE] buttons are great examples. It makes it easy to switch between playing chords vs. synth leads or bass lines. Check out the video below learn more: