This is a specialy voiced fuzz designed for bass guitar.
Controls are gain, clean blend, tone and fuzz volume.
Gain ranges go from gritty od to all-out singing fuzz, while the clean blend means you can mix in as much clarity and low end as required.
Although designed for bass, it works great with guitar too- it's actually my fuzz-of-choice for jazz gigs on the archtop!
True bypass too.