The JHS Overdrive Preamp is a faithful recreation of this unobtainable V1 of DOD’s most loved pedal. The 'Level' control adjusts the overall output of the circuit and lets you cut or boost the signal. However, the level control on this version has been modified from the original wiring of the #75 unit — giving this pedal much more volume. The 'Gain' control adjusts the amount of gain inside the overdrive circuit. Turning it up creates more clipping as it pushes the op-amp and hard clipping into overdrive.
JHS also added a slider switch to this production version, which wasn’t included with the original DOD 250. While researching the #75 "Big Box" pedal, Josh Scott acquired a second early big-box unit which used a completely different clipping arrangement. He therefore thought it only seemed fair to offer this switch, so that you could explore these two variations for yourself!
This "Big Box V1" DOD 250 circuit definitely feels like a 250, but with a few changes: more gain/grit overall and more unique low/mids. This makes it a must-have addition to any DOD collector’s lineup, or for anyone who's curious about how it all started.