Mooer Green Mile Overdrive Pedal : Mooer Audio micro effect pedals pack an incredibility BIG sound into a very small package. The Green Mile is based on the legendary 'Tube Screamer' sound. Two modes give the flexibility to switch between a warm tube drive sound with the natural dynamic response of a classic tube amp and a hot mode that gives more power and crunch. The Green Mile uses the classic JRC4558 chip.