​Duh is an aggressive one-knob fuzz that doesn’t merely bludgeon your amp with gain but adds a distinctive, harmonically rich character. There’s high-end sizzle and low-end mass, but both are carefully sculpted—think “fat but fit.” Unlike most ultra-high-gain fuzzes, it boasts phenomenal dynamic sensitivity, providing high-contrast tones in response to guitar-knob adjustments. Result: far more colors than you’d expect from a one-knob box.

Duh is voiced for great results with anything from a sizzling Strat bridge pickup to a fat-ass neck humbucker. Its tones are less scooped than on most retro fuzzes, though the low-mids are manicured to emphasize airy, sparkling highs. Single-note lines and solos sing with rich sustain. Chords sound massive, yet they retain definition, even relatively complex voicings that would dissolve into mush with most fuzzes.

Duh is a distant descendant of the two-transistor “Brand X” fuzz pedals of the ’60s, though it doesn’t sound like any of them. Its gain is actually lower than on most fuzzes, which paradoxically makes it sound bigger in the mix by preserving playing dynamics and crisp note attack.