The WALRUS AUDIO HARVESTER overdrive effector offers a wide range of sound adjustments. This is a rare pedal. It has some scratches, but the sound and functionality are perfect. This limited edition model was released on Black Friday in 2014 and comes in multiple color variations. This is the Harvester overdrive pedal from Walrus Audio. It's a limited-release overdrive pedal that produces mid- to high-gain sounds. In addition to "level," "drive," "bass," and "treble" controls, it features a toggle switch to switch between gain settings. It has the effect of pushing the sound while maintaining the original character of the guitar and amplifier. - Brand: WALRUS AUDIO - Model Name: HARVESTER - Controls: level, low gain, high gain, drive, bass, treble - Condition: Used - Connection Terminals: Effects loop terminals Thank you for looking.