Guitar Amp Channel Switching Over MIDI – FuelRocks
A special mini amp channel switcher/FX loop pedal (When you actually only use 1 of the 2 functions and the other is always on or off) Details in comments. : r/diypedals
The GA-FC: Unlocking Performance Potential with Your Amp
Amazon.com: Vivlex ABY Switch Line Selector Selection Channel Pedal Mini AB Box Switcher Electric Guitar Amplifier Footswitch True Bypass : Musical Instruments
What Is A Guitar Pedal Switcher & How Do Switchers Work? – My New Microphone