Dunlop MXR M250 Double-Double Overdrive

The MXR Double-Double Overdrive serves up two classic overdrives in a single housing. Changing between the two is as simple as a flick of the Lo/Hi switch. The Low Gain circuit belts out rich, fiery midrange tones while the High Gain circuit kicks up the gain and emphasizes highs and lows.
While the Lo setting is voiced after that famous Japanese overdrive sound, the Double Double Overdrive gives you 2-band tone control for a wider sound spectrum.
The Hi mode is trimmed towards an American boutique style overdrive sound with a little more grit, asymmetrical clipping and a pinch of odd order harmonics.