It is a chainsaw fuzz with active EQ, heavily inspired by two cult Japanese circuits (Boss HM2 Heavy Metal and Shinei FY-2 Companion Fuzz)
A Tonewood destroyer, featuring extreme square wave clipping coupled to an active EQ circuit allows extreme boosting and cutting of low and high mid frequency.
F - Fuzz
V - Volume
L - Low frequency (CCW = Cut / CW = Boost)
H - High mid frequency (CCW = Cut / CW = Boost)
Bass Guitar - adjust Low up and High to suit. High fully counter clockwise gives mid scoop.
Electric Guitar - use it "HM2" style and crank the High and Low controls to full plus boost into you amp's crunch or high gain channel. Be warned, it's not for the faint hearted.
Enclosure: 122 x 66 x 39.5mm
Power: 9v DC power supply via 2.1mm centre negative jack
Current draw: ~10mA
No battery option