The Horn device is a powerful board inspired by two of the most popular muffs nowadays, the EQD Hoof and the Cloven Hoof, just my swapping a couple of components. Critically acclaimed as one of the best muff-inspired fuzzes, with roots on the classic Green Russian features a hybrid Germanium/Silicon design, pairing maximum tone with maximum temperature stability not found in finicky and expensive vintage units.
The Horn Device soaks your guitar’s tone in beautifully dirty organic fuzz, thanks to its hybrid of germanium and silicon transistors. This circuit combines the best elements of a fuzz effect and overdriven amplifier by delivering a healthy dose of smooth, harmonically rich sustain, along with its distinctive, vintage-style fuzz. Tone and Shift controls provide a massive helping of tone-shaping options — especially in the midrange — delivering everything from classic scooped to modern boosted Mids.
The Cloven version of this circuit keeps the tightness and clarity you loved about the Hoof, along with the wide range of fuzz sounds, but replacing the germanium transistors with a set of Silicon transistors for cleaner cleans, higher gain, improved temperature stability, and a grittier, grindier, nastier fuzz tone with over 4x the gain of the original Hoof.
The Cloven Hoof is the perfect solution for those of you who wish the Hoof had more low-end, higher gain and was just a little bit Hoofier.
For further analysis on the circuits take a look at this thread on Free Stomp Boxes Forum.