This is based on the classic Colorsound Overdriver/Power Boost pedal from the 1970s. These guys took the circuit and added a bunch more gain and some mod cons. The 'depth' control has six options on a rotary switch that change the midrange EQ, although it's worth noting the switch is a twelve way switch, so the next six positions are blank.... that's how they come apparently. It reminds of a RAT somewhat, it's got that big, thick doomy growl.

Model: Black Arts Toneworks Black Forest
Made: USA, recent model
Serial: N/A
Type: distortion
Power Input: standard 9v DC centre-negative (supply not included)
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)