Home / Universal Audio Knuckles '92 Dual Rec Amplifier
Product Overview
The Raw Sound of Alternative Rock, Punk, and Nu-Metal Under Your Boots
In 1992, a legendary double-rectified American tube amplifier hit the market and instantly united musicians across disparate heavy genres—from the aggressive punk and alternative crunch of Dave Grohl (Foo Fighters) and Incubus to the bone-crushing, de-tuned metal riffs of Metallica, Nevermore, and Dream Theater. The Universal Audio UAFX Knuckles '92 Dual Rec Amplifier encapsulates the full soul, immense headroom, and massive low-end punch of that definitive Revision F high-gain crown jewel inside a compact stereo stompbox.
By pairing massive dual-engine DSP with physical room modeling derived from UA's award-winning OX Amp Top Box, Knuckles '92 bypasses the flat response of ordinary digital profile setups. It behaves like real hardware, reacting dynamically to your pick velocity, guitar volume pot, and complex chords with the exact percussive sag, speaker breakup, and explosive wall-of-sound energy that shook studios throughout the '90s and aughts.
Product Description
Three-Channel Monster Architecture with Deep Tube Customization:
Knuckles '92 maps out the entire tonal journey of the original multi-channel giant via its dedicated Green, Orange, and Red voicings:
Green (Clean/Crunch Channel): Delivers surprisingly rich, full-bodied, and pristine clean textures that break up into a gorgeous gritty bark when pushed—making it a perfect canvas for external pedals.
Orange (Crunch/High-Gain Channel): Supplies a punchy, aggressive mid-gain bite ideal for classic '90s post-grunge rhythm patterns and blistering thrash.
Red (Lead Channel): The ultimate destination for extreme saturation, providing a soaring, thick wall of high-gain compression and infinite liquid lead sustain that slices straight through dense drum tracking.
To capture the true physical "feel" of a real tube head, the pedal grants you under-the-hood access to reconfigure the virtual power amp section. Using the UAFX control engine, you can instantly swap between the tighter, modern punch of 6L6 power tubes or the aggressive mid-hump bite of British EL34 tubes. Furthermore, you can toggle between a snappy Solid-State rectifier for fast tracking or a saggy Tube rectifier for a loose, spongy, classic rock response.
Integrated Performance Preamp Boosts & Studio Noise Gate:
To achieve the tight, articulate low-end required for modern progressive metal riffs and lightning-fast staccato palm-muting, guitarists traditionally place an overdrive pedal in front of their high-gain head. Knuckles '92 solves this by integrating a classic TS-style overdrive boost circuit directly inside the signal path. You can customize the overdrive gain and tone to tighten up your low frequencies without requiring any external hardware.
To handle face-melting gain levels without any annoying pickup hiss or venue feedback, Knuckles '92 features an integrated, responsive studio noise gate. It clamps down instantly during rapid rhythm stops, ensuring your breakdowns stay perfectly sharp and dead-silent.
The pedal features 6 legendary speaker cabinet choices paired with classic studio microphone configurations (such as dynamic SM57s and smooth ribbon mics). From a classic oversized 4x12 cab loaded with Celestion Vintage 30s to punchy 2x12 extension setups, it perfectly emulates physical cabinet vibration and air response. True stereo input and output ports allow for huge, expansive double-tracked guitar soundscapes. With advanced 4-Cable Method support, you can even route Knuckles '92 to bypass your physical amplifier's built-in preamp stage, sending its high-gain boutique tones straight into your physical amp's power section for an uncompromised live stage performance.
Key Features
1992 REV F DUAL REC EMULATION: Full component-level recreation of the multi-channel high-gain tube amplifier head that defined alternative rock, punk, and metalcore.
THREE VOCAL CHANNEL SWITCHING: Instant toggle access between pristine Green (Clean), punchy Orange (Crunch), and fire-breathing Red (Lead) voicings.
TUBE & RECTIFIER SWAPPING: Advanced parameters allow you to swap output configurations between 6L6 or EL34 tubes and choose Solid-State or Tube rectification.
BUILT-IN TS-STYLE OVERDRIVE: Integrated preamp overdrive boost tightens low-end frequencies for modern metal riffs without extra pedals.
INTEGRATED STUDIO NOISE GATE: Lightning-fast gating circuit safely cuts out unwanted background hum, pickup buzz, and high-gain feedback during staccato breaks.
6 PREMIUM SPEAKER CABINETS: 6 curated cabinet/microphone combinations capture the realistic phase-aligned air response of a real tracking room speaker stack.
TRUE STEREO & 4-CABLE ROUTING: Full stereo connectivity for massive tracking widths or multi-routing setups to integrate into physical amplifier effects loops.
EXPANDED UAFX APP & MIDI CONTROL: Connect over Bluetooth or hardwired USB-C to store up to 4 onboard presets, load artist profiles, and receive programmable MIDI data.
