I think you may be being mislead about a 5-button footswitch. As far as I know the only features on the DSL40C that are 'foot-switchable' are the Classic to Ultra gain channels (i.e. whichever sub-channel is selected on the front panel), and the reverb ON/OFF. 2 buttons is all that the DSL40C can use. From the manual: For the connection of the supplied 2 button footswitch (PEDL-00009). This allows you to switch between the Classic Gain and Ultra Gain channels (Note: The footswitch overrides the front panel Channel switch) and also switches the Reverb on/off.