Unleash the power of the music within you. Stomp on the Knuckles '92 Dual Rec Amplifier pedal and bring the legendary high-gain tone behind bands like Foo Fighters, Incubus, and Dream Theater to your pedal board. Offering six classic mic and speaker pairings, a built-in TS-style overdrive/boost, and a noise gate for dead silent stops even at extreme gain settings, Knuckles '92 delivers a wide range of tones, from gritty power chords to searing leads.Explore the famed green, orange, and red channels for everything from perfect cleans to bone-crushing crunch, and switch between EL-34 or 6L6 power tubes and solid-state or tube rectifiers for maximum versatility. With its preamp boost sculpted for tight, modern metal and face-melting tones, this amp gives you total control.Deep dive into customization with the UAFX mobile app, where you can tweak hidden controls, save settings, and access artist presets from top metal guitarists. Whether you’re chasing alt-rock anthems or brutal metal riffs, Knuckles '92 puts the California king of high gain right on your pedalboard.And now, using its rear panel USB-to-MIDI connection, Knuckles '92 drops straight into any programmable MIDI rig, receiving preset changes and realtime control of boosts, EQ, and more.**Requires a compatible USB MIDI host, controller, or interfaceUniversal Audio Knuckles '92 Rev F Dual Rec Amplifier IncludesCabinet modelsUK V30: 4x12 British cab with V30’sCA V30: 4x12 Oversized American cab with V30’sWhite 75: 4x12 British cab with Celestion 75’s3 Bonus Cabs available with UAFX mobile app: 1x12 EV12, 4x12 Celestion 80's, 4x12 BrownUniversal Audio Knuckles '92 Rev F Dual Rec Amplifier FeaturesIntroducing UAFX 2.0Improved UAFX app and bluetooth connectivityWired UAFX app control for direct mobile-to-pedal USB connectionNEW: Add expression to your performance with MIDI CC parameter control of UAFX dual footswitch pedals*NEW: footswitch preset modes (amp pedals only)NEW: 128 recallable presets with MIDI program changeNEW: Pedal parameter control over MIDI CC*NEW: Tempo sync for FX with MIDI beat clockPlug into the famous 1992 Rev F Dual Rec high gain amplifier tone that fueled punk, alt rock, and metal from the ‘90s onwardPowerful UAFX dual-engine delivers the most authentic emulation of the amp ever placed in a stompboxDial in genre-defining sound with built-in TS-style overdrive, preamp boost, noise gate, channel switching, output tubes and selectable solid-state or tube rectification Experience groundbreaking physical room modeling derived from UA’s award-winning OX Amp Top BoxExperiment with six classic mic/speaker pairings as used on classic ‘90s alt rock and metal records Play presets designed by UA’s tone gurus, dual-rec specialists and artists; or customize and save your own tones in the UAFX mobile appUniversal Audio Knuckles '92 Rev F Dual Rec Amplifier SpecificationsPower requirements: Isolated 9VDC,center-negative, 400 mA minimum (sold separately)Inputs: 2 x ¼” TS (right input for stereo connections and 4-cable mode)Outputs: 2 x ¼” TS (right output for stereo connections and 4-cable mode)USB Type-C for updates via computerHeight: 2.56” (6.5 cm)Width: 3.62” (9.2 cm)Depth: 5.55” (14.1 cm)wWeight: 1.24 lbs (0.567 kg) Universal Audio Knuckles '92 Rev F Dual Rec Amplifier High-Gain Effects Pedal.