philipacamaniac
Fractal Fanatic
Every TRS footswitch/exp pedal connector sends power over the cable, voltage is what the device needs to "read" the state or position of the pedal.
Potentially even an axe fx or ax8 could power up a led but I don't know if it supplies enough current, without someone from FAS giving us this info we risk to damage it doing so.
There is a just enough juice to dimly light a standard footswitch LED with the AX8 jacks. I never tested the results with a low current LED, which might light up normally.