Moka was the result of a couple-week deep dive into the elusive Harmonic Percolator after the unfortunate passing of legend Steve Albini, who famously would not shut up about his love of the pedal. In the hours of digging I discovered that there are three major versions; the classic germanium, a more modern silicon, and Albini's, which was germanium but had a few changed resistor values, resulting in a completely different sound. I tried them all. I liked them all. So into the box they went. Select your transistor, Germanium or Silicon. Ge mode is powered by a NOS Russian transistor. While set to Ge you can switch on "Albini's Specs". This mode is not available in Si. There are two clipping diode selections, "vintage" representing the classic, and "modern" giving more clarity and headroom. Harmonics is your input gain, exactly like the vintage unit. From light crunch to gnarly fuzz. The Weight control adjusts the input capacitor, setting the low frequency content going into the gain. It ranges from full range "transparent" to treble booster-like shimmer. Clipping allows you to set how much signal goes to the clipping diodes. This is a good way to get a little volume back or tame the overdrive. You get to design your own harmonic percolator. How cool is that?