The Old School FX Rootless Tree is a transparent overdrive pedal designed to add a subtle to moderate amount of grit without significantly boosting the volume. It is particularly well-suited for blues and roots music, enhancing harmonics in chords and double-stops. The pedal features controls for Level, Tone, and Gain. The MkII version adds a toggle switch to control the clipping threshold, offering both a low setting (identical to the original) and a high setting for more drive. The MkII also has a smaller footprint with top-mounted jacks.