Tried to do a search on this to no avail, so hopefully the collective wisdom of TB can help out. I know a little bit about fuzz. I've had a few and enjoyed them, and I've listened to move videos and clips than I can count of the endless pedals out there - so I know there are hundreds if not thousands of different options. I'm also developing an interest in starting to build some pedals and fuzzes from kits, which had led me to wondering... How many different types of fuzz circuits are there? -and- What are the general (NOT specific to any given pedal) characteristics of these circuits that may or may not lend themselves to use with bass, or certain applications. This is more of an academic interest, so I'm hoping to not get into a debate about one pedal or brand over another, or how one is just "the best". I'm sure they all have their pros and cons, otherwise only one type of circuit would exist, right? To start, here is some of what I've read and learned to date (feel free to correct any errors, by no means am I an expert). Types and characteristics seem to include: Fuzzface (with varieties include germanium and silicon circuits, also the Sunface) - I've read these being referred to as "transparent", but also finicky and sensitive to a lot of factors such as your guitar or amp. Muff (endless versions of muff circuits) - more often than it seems that not the mids are relatively scooped, but that can be addressed through component changes Brassmaster - originally designed for bass, retains low end relatively well Superfuzz Octave fuzz Others??? I can imagine that there may be all sorts of entirely unique circuits out there that would be interesting to hear about, but it seems like a good list could be generated of the common ones. One final point - I'm really only asking about fuzz at the moment. I know it gets more complex when we start to talk about different types of overdrive or distortion, so how about restricting just to "fuzz" for the time being?