• Since its launch in 1981, the SD-1 Super Overdrive has been the go-to gain pedal for musicians of all styles. • Based on the asymmetric clipping circuit of the OD-1 Overdrive, one of the original BOSS compact pedals from 1977. • Offers rich, smooth, and musical overdriven sounds that inspire guitarists worldwide. • Unmistakable BOSS overdrive sound with a unique asymmetric clipping circuit. • Sounds with smooth-moderate saturation, clear mids, and defined lows. • Ideal for use with clean and slightly overdriven amps. • Also works great for adding clarity and definition to high-gain sounds. • Pairs well with boost, overdrive, and distortion pedals.