Built by Deathmetalamps,  a Marshall amp sounding overdrive / distortion pedal.   Has controls for Volume, Gain, Bass, Mids and Treble.   One cool feature is that when you dial back the treble knob completely it beefs up the low end for added fat sound if playing into a combo amp with an 8" speaker,  you can recapture the highs with the treble control on your amp.  An excellent Brown sound in a box pedal.   Operates on standard 9 volt center negative power supply.