exotic, vintage bucket-brigade delays and germanium-transistor fuzzes that qualify as classic pedals, one humble three-knob overdrive has been doing the job for 42 years with little romance or acclaim, and probably juicing the tones of more rigs and recordings than any other single pedal on the planet. Introduced in 1981, the Boss SD-1 Super OverDrive represented the OD pedal come of age — a just-right circuit for guitarists requiring pushed-amp tone in situations where an amp can’t easily be pushed, or providing just a little poke to take a lead
