EarthQuaker Devices Gray Channel Dynamic Dirt Doubler in excellent condition, serial #028, with the original matching box.

Discontinued EQD dual-channel overdrive based around the classic gray-box hard-clipping overdrive/preamp style circuit. Each side has its own gain and level controls, with selectable clipping options: the Green channel offers Silicon / No Diode / Germanium, while the Red channel offers LED / No Diode / FET/MOSFET clipping. It can cover everything from clean boost and warm breakup to tighter crunch, fuzzy drive, and heavier op-amp grind. EarthQuaker describes it as two channels of classic overdrive with three clipping modes per channel, and it is no longer in production. 

Pedal is very clean overall with only light cosmetic wear visible on the enclosure and box. Back label is intact and clean. Tested and working properly. Requires standard 9V DC center-negative power supply.