Unused switch

In preset mode, one of the foot switches is always free - the current preset switch. It can be used for different purposes, for example, to switch between scene 1 and 2, or as a stomp switch, оr you can use it as a tap-tempo, and allow the tuner to be called a short touch so that you can use it as an emergency muting.
Аnd for a lot of other function of user choice. This will also work in scene mode.