TC Electronic Ditto X2 Looper English Manual page 8

Setup examples
Setup example 2:
Ditto X2 Looper and effects
Place your effects before Ditto X2 Looper. This
will allow you to create and record different
sounds within the same looping session simply
by switching your effects on and off.
Modulation Drive
Pedals Pedals
Input
Combo
Ditto X2 Looper English Manual 6