Flexible Usage: Use the Electro-Harmonix Soul POG alone or together, with either effect placed first in the chain for versatile tone shaping FX Loop Integration: Easily insert other pedals between the Soul Food and Nano POG effects with the built-in FX loop of the Electro-Harmonix Soul POG Dual Effect Functionality: The Electro-Harmonix Soul POG Multi-Effects Guitar Pedal combines the Soul Food overdrive with the Nano POG polyphonic octave generator