With the SD-1, both novice and professional musicians can achieve expressive tones right from the start, thanks to its natural response and subtle midrange boost built into its design.
- Boss overdrive effect pedal
- Asymmetrical clipping circuit (tube-like)
- Soft to moderate saturation
- Clear mids and defined lows
- Five-year warranty BOSS
In 1977, BOSS created an entirely new pedal category with the OD-1, which for the first time offered natural saturation to guitarists in this format. Its unique asymmetrical clipping circuit, producing a wealth of even-order harmonics, replicated the sound and feel of a tube amp but at controllable volume levels. Four years later, this revolutionary design evolved into the SD-1, which was more versatile and added an active tone control to shape the high-end response, along with subtle improvements for tighter bass.
With the SD-1, both beginners and pros can achieve inspiring tones right out of the box, thanks to its natural response and the subtle midrange boost built into its design. It enhances the sound where it matters most, helping your guitar sit perfectly in the mix with warmth, clarity, and strong presence. Lower gain settings excel for rhythm parts, while higher gain settings are ideal for thick, melodic solos. The SD-1 is also highly responsive to input gain, allowing you to adjust your guitar’s volume control to dial in different saturation nuances.
- The unmistakable saturated sound of BOSS
- Exclusive asymmetrical clipping circuit delivering tube-like saturation
- Smooth to moderate saturation with clear mids and defined lows
- Perfect for use with clean and slightly overdriven amps
- Also great for adding clarity and definition to high-gain tones
- Works well alongside boost, overdrive, and distortion pedals
- Five-year warranty from BOSS
EAN13: 4957054008505








