The SD1 produces the warm, smooth distortion of an overdriven tube amplifier while maintaining the subtle nuances of your picking technique. Boss's unique asymmetric overdrive circuitry delivers a genuine overdrive effect for a classic guitar sound. A tone control is also provided for precise tonal adjustment.

Smooth, round, fat distortion--the sound of tubes being pushed past their limits. The overdriven sound that the electric blues and rock were built on. That's the sound you'll get with the Boss SD1 Super Overdrive Pedal. Its unique asymmetric overdrive circuitry delivers a genuine overdrive effect for a classic guitar sound that still maintains the subtle nuances of your picking technique. And so you can get your tone just right, there's a Tone control knob between the Level and Drive knobs. No, there's nothing complicated about this pedal--just some great engineering and a sound that stands the test of time. A lot of digital distortions out there could take a lesson from the SD1.

About Boss Pedals
The history of Boss reads like the history of guitar effects. From their legendary CE-1 chorus pedal (the big gray box that started it all) to the world's favorite line of compact pedals, they've been responsible for more guitar innovations than just about anyone else.

Boss's compact pedal line-up began in 1977 with the classic OD-1 Overdrive. Its warm, smooth overdrive sounds and breakthrough Boss pedal features (heavy-duty construction, rubber pads on top and bottom, recessed… read more control knobs, silent switching, a built-in LED and easy battery replacement) immediately set it apa

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