I have a 3 button footswitch from TC/Digitech amps...still using just a single TRS cable, but I have to assume that is no good with the Kemper. I didn't try it. But the 4 button switch I've seen out of Poland uses 2 TRS cables, so I'm guessing it's 1 or 2 buttons max for each TRS cable.
I really want the matching Kemper 2 button, but can't find one in the US it seems. I like things that match LOL.
I have a Digitech FS3X 3-button footswitch and it works with the Kemper.
Plug it in, to switch/pedal 2
- go to page 7/18 in the system settings
- select Mode: Dual Switch
- the buttons on the footswitch from left to right are labelled "Mode", "Down" and "Up"
- the footswitch Mode button will operate whatever function you have assigned to "Switch Tip"
- the footswitch Down button will operate whatever function you have assigned to "Switch Ring"
- the footswitch Up button has the same effect as pressing the other two buttons together and thus operates both "Switch Tip" and "Switch Ring" simultaneously.