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Universal Audio UA-KNUCKLES-U '92 Rev F Dual Rec Amplifier Pedal

A watershed year for high-gain amplification, 1992 introduced the double-rectified monster that would unite metalheads, punks, and rockers alike with its fire-breathing tone. Three decades down the line, Universal Audio's Knuckles '92 Rev F Dual Rec Amplifier puts the punch of that all-time classic tube head on your pedalboard. This stereo amp and cab simulation pedal's Green, Orange, and Red channel voicings supply everything from the original amp's signature tight and ultra-saturated gain-laden sounds to a rich palette of full-bodied cleans. Six classic microphone and cabinet configurations allow you to twist and tweak Knuckles' response to your taste, and you also get an onboard TS-style overdrive, preamp boost, and a noise gate to cut out unwanted noise. What's more, Universal Audio's UAFX app unlocks a host of expanded tone-shaping options, including the ability to switch between EL34 and 6L6 power tubes, change from solid-state to tube rectification, and fine-tune every element of every setting. Additionally, with USB MIDI compatibility, you can further expand your control with additional presets and performance modes. From subterranean nu-metal riffage to buzzsaw pop-punk crunch to arguably the most pivotal metal tones of the '90s and the aughts, Universal Audio's Knuckles '92 pedal comprehensively captures the soul of hard-hitting California boogie.

Multichannel madness

Universal Audio's UAFX pedals are revered at Sweetwater for their uncompromising commitment to sonic accuracy, capturing every tonal nuance and harmonic detail of the amps that inspired them. And to truly replicate the vibe of a classic double-rectified amplifier, one voice simply won't cut it — the original amp's trio of channels ran the tonal gamut, resulting in its widespread adoption among players from disparate musical backgrounds. To match the flexibility of the original, Knuckles packs three channels: Green, Red, and Orange. Combined with this pedal's built-in TS-style overdrive and integrated preamp boost, Knuckles tackles everything from face-melting lead tones to thunderous crunch, along with a pleasing assortment of cleans to balance out this pedal's all-out aggression.

4-cable mode offers powerful channel switching

Each pedal in Universal Audio's UAFX series features a special "4-cable" mode accessible via the UAFX Control app, allowing you to bypass your amp's preamp when the pedal is engaged for incredibly realistic tube-style tones. By hooking your pedal up to both your effects loop send/return and the front of amp input, you can instantly switch between your amp's stock tone and your UAFX pedal routed straight into the power amp, effectively adding two extra channels to your amplifier. What's more, Universal Audio designed this feature with multiple pedal setups in mind — you can connect any number of UAFX pedals in this configuration for multichannel madness.

Switch up your speakers

Most of Knuckles' magic is in its handpicked microphone and speaker combinations, bolstered by Universal Audio's Dynamic Room Modeling technology. Knuckles sports three of these settings right out of the box, granting you a trio of roaring 4 x 12-inch tones to choose from. Furthermore, you can connect to the UAFX app to unlock three additional cabs.

Get the most out of your UAFX gear

UAFX 2.0 is here, designed to give you the greatest control over your tone and your live setup. With this latest update, the Knuckles '92 boasts improved Bluetooth and USB-C controls for enhanced connection with Universal Audio's powerful UAFX app, new footswitch modes for intelligent preset switching, and USB MIDI control, opening a world of vast performance capabilities. Whether you engage the UAFX app to unlock deeper tone shaping and access artist-curated presets and effects, explore Live, Tour, and A/B-C/D footswitch performance modes, or connect with your programmable MIDI rig for access to 128 recallable presets and enhanced real-time expression, UAFX 2.0 is primed to elevate every dimension of your playing experience.

General Features:

• UAFX amp modeling pedal that rigorously replicates the tone of a classic double-rectified California tube head championed by iconic metalheads, punks, rockers, and more
• Includes Green, Orange, and Red channels to deliver everything from the original's signature ultra-tight high-gain saturation to smoldering lead tones to captivating cleans
• Built-in TS-style overdrive and preamp boost inject your tone with a dose of extra heat
• Dish out gain-laden tones without a hint of noise thanks to the built-in noise gate
• Includes 3 studio-ready cab/mic emulations, with 3 more available via the UAFX app
• Presets available to save your favorite sounds
• 4-cable mode bypasses your amplifier's preamp when the pedal is engaged
• USB-C port for firmware updates
• Bluetooth-compatible for access to Universal Audio's UAFX app
• USB MIDI compatibility for expanded control

Tech Specs:

• Pedal Type: Amp Emulation, Overdrive
  
• Analog/Digital: Digital
  
• Channels: 3
  
• Form Factor: Pedal
  
• EQ: 3-band EQ, Presence
  
• Presets: 1 x Onboard
  
• Amp Modeling: 6 x Cabinet emlations
  
• Distortion/Overdrive: Overdrive
  
• Effects: Noise Gate
  
• Inputs: 2 x 1/4" TS
  
• Outputs: 2 x 1/4" TS
  
• USB: 1 x USB-C (firmware updates)
  
• Bypass Switching: Buffered
  
• Software: UAFX Control mobile app
  
• OS Requirements - Mac: iOS 13 or later
  
• OS Requirements - PC: Android 10 or later
  
• Features: Mono/Stereo, 4-cable mode, Bluetooth v5.0
  
• Power Source: 9V DC (400mA) power supply (sold separately)
  
• Height: 2.56"
  
• Width: 3.62"
  
• Depth: 5.55"
  
• Weight: 1.24 lbs.
  
• Manufacturer Part Number: GPM-KNUC

Warning:
This product can expose you to chemicals known to the State of California to cause cancer. For more information, go to P65Warnings.ca.