The AXiom Fuzz Preamp FP-1 combines the best characteristics of the classic fuzz pedals with the same tweakability, extended gain range and versatility as our other pedals in the "Preamp" line. At its heart, the Fuzz Preamp has a silicon transistor-based fuzz stage that has all the huge transistor clipping and reactivity to your picking dynamics and guitar volume control that the best fuzz pedals are known for. But you aren't limited to just silicon character fuzz - the FP-1 utilizes a "sliding bias" GAIN control and transistor current sourcing to replicate the sound and behaviour of germanium transistors as well. Silicon mode is designed to replicate the massive compression and "exploding amp" sound of BC108 silicon transistor fuzzes and Germanium mode replicates the smoother, glassier character of classic NKT275 germanium transistor fuzzes.