Killer MKIII with a custom three way switch for 1)full bass 2)slightly cut bass 3) deeply cut bass frequencies...Fat fuzz sounds to articulate distortion sounds.

Premierguitar.com review:

The sound that I got with the MKIII was one of the best fuzz tones that I’ve ever achieved. The note separation, low-end response, and sensitivity were near perfect. I was particularly impressed by how punchy the MKIII was, with every note that I played up and down the neck hitting me in the gut like a prize fighter. The highs were very present and sharp, exhibiting more of the qualities of a distortion pedal than a high-gain fuzz device. It reminded me of when I used to run my old Boss SD-1 into my Big Muff, which resulted in a colossal wall of sound with more sharpness and intensity than the stock Big Muff was capable of. In this case, the MKIII achieved tones in that realm that were tighter and thankfully quieter. Flipping the toggle switch to the fattest setting threw me into vintage metal territory, with the MKIII kicking out some of the most fantastic, midrange-heavy fuzz this side of Master of Reality.