Universal Audio Knuckles ‘92 Dual Rec Amplifier Pedal

Experiment with six classic mic/speaker pairings used on classic alt rock anthems and metal records

Play presets designed by dual-rec specialists; or customize and save your own tones in the UAFX Control mobile app

Plug into the California King of High Gain

Whether you seek the gritty power chords of punk and alternative anthems by the likes of Dave Grohl and Incubus or the complex aggression of bands like Metallica and Dream Theater, Knuckles ‘92 puts one of the most versatile multi-channel amps ever made right on your pedalboard.*

Explore a Range of Rectifier Tones

Use the famed green, orange, and red channels to explore perfect cleans to bone-crushing crunch and smoldering lead sounds. Then experiment with EL-34 or 6L6 power tubes and switch between solid-state or tube rectifiers for ultimate control and feel under your fingertips.

Play Through Perfect Preamp Boosts

Knuckles '92 is equipped with a classic TS-style overdrive — a tried and true component for tight, articulate playing — and an integrated preamp boost that’s famous for sculpted modern metal tones. And its built-in noise gate gives you clear sound even at face-melting gain levels.

Get Six Epic Mic & Speaker Pairings

With six mic and speaker pairings used on countless iconic records, Knuckles ‘92 captures the full essence of playing through one of the greatest aggressive guitar amps ever made.

Customize Your Sound with the UAFX Control App

Unlock deep customization with the UAFX Control mobile app. Tweak hidden controls, save boosts and noise gate settings, and even change output tubes and rectifier modes. Plus, explore artist presets crafted by the world's top metal guitarists and dual-rec specialists.