Get all the distortion of an overdriven tube amp with the Boss SD-1 pedal. Tweak the tone control knob to dial in some grit, or go for a smooth, round tone.

Boss SD-1 Super Overdrive Pedal
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.

Knobs: Level, Tone, Drive

Uses 9-volt battery or PSA-120 adapter (not included).
Compact overdrive pedal with warm, smooth overdriven sounds
Unique asymmetric overdrive circuitry for a classic, natural tube amp growl
Tone control provides precise adjustment of drive sound
BOSS five-year warranty

Weight, Dimensions, and Manufacturer Part Numbers
Shipping Weight: 1 lbs
Shipping Dimensions: 6 x 4 x 3 in
Manufacturer Part Number (MPN): SD-1

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