Katzenkönig loves humbuckers and single coils, your cranked amp, and your super-clean amp. The front half of the circuit is based on the Tone Bender MKII, widely considered the most desirable of the Tone Benders. In the original, a germanium transistor makes the signal loud; a second transistor makes it very loud, and a third one makes it ridiculously loud. The filter control works wonders, enabling shades you'd never obtain from a Tone Bender MKII.