Designed to flaunt all the power of modern pedals with the option to reach back decades for vintage tone, the SolidGoldFX Agent 13 is a time-traveling fuzz monster. Easy to use, the pedal sports fuzz, volume, and bias knobs, the last of which minutely shapes the midrange character and distortion content in the effect to jump from a warm germanium voice to a searing germanium assault. For added flexibility, SolidGoldFx included a three-position tone switch to emphasize bass, treble, or keep the EQ flat.