CB-404: Is the included orange knob available separately? July 27, 2023 07:15 Updated Follow No. The included knob set is not available separately. *The orange knobs only work with the SP-404MKII model. Related articles CB-404: I want to change the knobs but can't easily remove them from the SP-404MK2 unit. SP-404MK2: How can I control the effects with an external pedal? SP-404MK2: How do I find and install the SP-404MKII App? SP-404MK2: System Program Version Update SP-404MK2: What kind of SD cards can I use?