Built with a BSIAB (Brown Sound In A Box) circuit designed by Ed Guidry, a bright LED and controls for level, gain, and tone, the CMATMods Brownie summons enormous, searing distortion in an enclosure the size of a Boss pedal. Designed to emulate the power and signature gain of a Marshall half-stack without the hassle of hauling one around, this is a perfect pedal for thrash, stoner, or heavy metal.