BJF Mystery Fuzz

BJF Mystery Fuzz is a new multi-stage fuzz design from Björn Juhl, featuring three NPN silicon metal can transistors and a carefully voiced circuit that blends transistor stages for a wide spectrum of fuzz textures.

From dynamic overdrive-like tones to full, harmonically rich fuzz, Mystery Fuzz offers exceptional touch sensitivity and cleans up beautifully with your guitar’s volume control. It delivers plenty of output, impressive sustain, and complex overtones that remain clear and musical in a live mix.

This is not just a heavy fuzz — it is a highly responsive and expressive BJF design with depth, clarity, and character throughout its range.

Björn has even said that this is his favorite fuzz he has made so far.

Controls: Volume, Fuzz, Treble

Power: 9V battery or standard 2.1mm center-negative DC 9V adapter.