I have one. Overall it's my favorite fuzz. It's easily the most versatile fuzz I've ever had (and I've had at least 8 or so). With the gain rolled back, it's more of an overdrive. I want to buy an older 3-knob version, but I haven't been able to find one for sale.
Tks. I'll look into those, also.well, as far as replacing a muff, you could also try the blacout effectors musket fuzz or stomp under foot clones
Here is a short review I wrote a few months ago. The Hoof is one of my favorite pedals.
I played a few hours through my new 4-knob Hoof last night. I was really astounded at how wide the variety of sounds is coming from that pedal. The "tone" knob on this pedal is really more akin to the "nature" knob you see on many BJFE pedals. Although the tone generally speaking sweeps from bassy to trebly in the usual fashion, the character of the fuzz changes COMPLETELY as you move through the range. Coupled with the shift knob, I would say there are probably 4 or 5 completely different and totally usable sounds in there.
All the way CCW on the tone knob provides a pretty dynamic and relatively uncompressed distortion tone that I found great for heavy power chording. Moving the tone knob CW to 9 o'clock and this character changes to a much more scooped, metallic sound with a faint octave-up effect. Noon yields a more traditional Big Muff sound heavily scooped and moderately compressed with significant sustain. 3 oclock adds a nasal quality to this Big Muff sound. Completely CW gives a thin, raspy sound with almost no low end not something that's universally useful, but possibly useful as an intro or outro effect.
The shift knob does not have quite the dramatic effect that the tone knob has, but it does offer many unique shades on the themes provided by the tone knob.
Overall, Im quite impressed. Im going to have a lot of fun with this one.
When you say that is "the most versatile fuzz", what do you mean? What makes it different than other fuzz pedals?