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Boss

Boss SD-1-4A 40th Anniversary Super Overdrive Pedal

Regular price $ 64.99 USD
Regular price Sale price $ 64.99 USD
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For your consideration, Garrett Park Guitars represents this Boss SD-1-4A 40th Anniversary Super Overdrive Pedal. 

Back in 1981, BOSS unveiled their workhorse SD-1 Super Overdrive, a core gain pedal that has been subsequently wielded by generations of players across genres. The BOSS 40th Anniversary SD-1 Super Overdrive celebrates four decades of this classic stompbox, vaunting the same asymmetrical clipping circuit, along with a head-turning reverse color scheme that will stand out on even the most crowded pedalboard. The SD-1 has long been renowned for its mid-focused tone and natural tubelike overdrive characteristics. It's ideal for warming up or adding grit to a clean or edge-of-breakup tube amplifier, and it's a great way to add tightness and definition to a high-gain setup. It also makes a stellar lead boost and stacks well with other dirt pedals. If you're searching for a drive stomp with a rich, harmonic-infused tone, join the legions of satisfied guitarists who build their sound around the SD-1. Grab the BOSS 40th Anniversary SD-1 Super Overdrive today!

The Clipping Circuit That Defined “Overdrive”
In 1977, BOSS created an entirely new stompbox category with the OD-1, bringing natural overdrive in pedal form to guitarists for the very first time. Producing a signal rich in even-order harmonics, its unique asymmetric clipping circuit replicated the pleasing sound and feel of a driven tube amp—but at controllable volume levels. Four years later, this breakthrough design evolved into the more versatile SD-1, which added an active tone control for shaping the treble response and subtle enhancements for more low-end body. 

Overdrive Perfection
The SD-1 allows players from beginner to pro to get inspiring sounds right away, thanks to its natural behavior and the subtle mid boost that's part of its design. It gives your tone a push where it matters most, ensuring your guitar always sits perfectly in the mix with warmth, clarity, and rich presence. Lower drive settings are great for rhythm parts, while higher settings are ideal for fat, singing leads. The SD-1 is also very sensitive to input gain, letting you dial in different shades of overdrive simply by adjusting your guitar's volume control.    

The One Pedal Every Player Needs 
With its organic character and responsive drive and tone controls, the SD-1 delivers the right sound for just about any style of music. Kick on the pedal with your favorite clean or slightly driven amp for mild-to-moderate overdrive that’s ideal for everything from classic rock and gritty blues to pop, country, jazz, and beyond. The SD-1 also shines as a booster for high-gain amps and other drive pedals, providing mid focus, tight bass, and smooth top end that's perfectly suited for heavier sounds and solo playing.

Limited Edition 40th Anniversary SD-1 Super Overdrive
To celebrate 40 years of continuous SD-1 production, we've created a limited edition version that's available throughout 2021. This commemorative pedal features a black body with yellow lettering, gold-capped knobs, and a vintage silver thumbscrew for the battery compartment and comes in a box with a special 40th Anniversary logo.

  • 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

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