Built with germanium and silicon transistors and diodes, it generates an even-order harmonic distortion with amazing clarity, even with complex chords. It can work equally well with vintage single coils and hot humbuckers. Even at maximum settings, the Karma Suture retains an open and responsive character unlike a lot of fuzzes and distortion pedals. Even though it has an open character, you can get amazing sustain, especially if you're hitting a cranked up amp with it. Based on the rare Harmonic Percolator circuit, it adds the exclusive Density and Diodes controls.