Formula B

Formula B pedals are hand built by Marco Bovelli in Todi in Umbria, Italy. Taking classic gear as his inspiration, Marco crafts extraordinary guitar pedals with innovative features: for example, his Fuzz Rangers and Super Plexi pedals allow the user to set the boost before or after the main effect for varying sonic possibilities.

The Formula B Vintage Vibe is one of my bestselling guitar pedals, and it's easy to see why - it's an homage to the Uni-Vibe, made famous by the likes of Jimi Hendrix, and features the lush, organic chewiness of the original combined with additional features suited to the modern pedalboard.

The Mini Bender Combo squeezes Tone Bender Mk1.5 and MkII Pro circuits into one gorgeous enclosure. "Sounds really authentically visceral," says Stefan Karlsson at Guitar Pedal X.

There's also the Fuzz Rangers Limited Edition, a world exclusive for Boost Guitar Pedals. It adds a silicon/germanium toggle replicating the sounds of the Fuzz Face in Si mode, and the Cesar Diaz Square Face in Ge mode.

Formula B pedals have ended up in the hands (or more accurately, at the feet) of guitar luminaries including Slash and Diego Leanza.