A guitar effect pedal controller is a device that enables guitarists to manage multiple effect pedals simultaneously, streamlining their setup and making it easier to switch between complex effect configurations during live performances or recording sessions. By consolidating control over several pedals into one unit, these controllers help guitarists organize, save, and access multiple effect chains, making complex tone shifts smooth and efficient.

Typically, a pedal controller might offer features like programmable presets, allowing musicians to save combinations of pedal settings and recall them with a single button press. It can also have MIDI functionality to integrate with digital equipment, allowing for synchronization with external devices like synthesizers or drum machines. Some controllers feature an LCD or LED display, showing the active pedals or presets, and may include customizable footswitches that can be assigned to different functions. With advanced routing options, some controllers allow for arranging pedals in different orders, or bypassing specific pedals as needed, giving guitarists extensive flexibility over their sound.