This here is a trio of distortion boxes.  The circuit was originally published in the *great* Ken Anderton book “Electronic Projects for Musicians”.  Later a version of it with a few minor tweaks was built by Way Huge Electronics (the original issue of them) and marketed under the model name of “Red Llama”.  Those now fetch somewhere around 1 zillion dollars on ebay (okay, a few hundred).  Anyway the circuit is a refreshing change of topology using a CMOS hex inverter for the gain stages, and sound-wise the results are pretty damn cool.  Its kind of a halfbreed….not wild enough enough to be a fuzz, not tame enough to be an overdrive.  Its a good overall distortion and sonic-thickener.  Its my own personal go-to whenever i just need a distortion pedal. 

These three were all built and sold some time ago.  Controls are volume and distortion/gain, just like any good pedal should be….