In the Carl Martin Octa-Switch MK3 diagram below, Loop 5 is being used as an Insert Loop for the amp’s preamp (but any loop # can be used). This means some pedals are in front of the amp, and some pedals are in the amp’s FX Loop.
IMPORTANT: Ensure the Insert Loop (eg. Loop 5) is always enabled on your presets to keep your amp’s preamp in the overall signal chain.
