Since its release in 1981, the workhorse SD-1 Super Overdrive has been the core gain pedal for generations of players across every musical genre. Based around the revolutionary asymmetrical clipping circuit from the OD-1 Overdrive—one of the three original BOSS compact pedals from 1977—the SD-1 delivers rich, smooth, and highly musical overdrive tones that continue to inspire guitarists everywhere.

• Genre-defining BOSS overdrive sound
• Unique asymmetrical clipping circuit produces tube-like overdrive characteristics
• Mild-to-moderate drive tones with focused midrange and tight low end
• Ideal for use with clean and slightly driven amps
• Also works great for bringing tightness and definition to high-gain amp tones
• Stacks well with boost, overdrive, and distortion pedals
• BOSS five-year warranty