The Fairfield Circuitry Barbershop V2 Overdrive retains the original model's versatility and throaty with a few new tricks up its sleeve to offer players even more sonic options. Coming equipped with your standard volume and drive (gain) knobs, this updated rendition sports two unique controls: Tone and Sag. The three-position Tone switch allows you to adjust high, low, or no cut to subtlety brighten or darken your tone while the Sag knob reduces voltage to the amplifier for dialing in the Brown Sound in a box.