OVERDRIVE PEDAL Distortion pedal for electric guitar. The legendary analog overdrive preamp sound is back. First conceived by David Oreste Defrancesco (DOD) in the 1970s as a way to get distortion and boost without any of the drawbacks that came with some of the fuzzes of the day. This updated version uses the correct vintage LM741 op amp, just like it did in the 1970s. Gain (distortion) and Level (volume) controls. True Bypass. Jack In/Out. Blue status LED. 9V battery or optional adapter. Dimensions: 11.9 x 6.7 x 5.7cm. Weight: 281g.