Universal Audio 92 Rev F Dual Rec Amplifier Effects Pedal

The Knuckles ’92 Rev F Dual Rec Amplifier is a high-gain modelling stompbox from Universal Audio that faithfully emulates the iconic 1992 Rev F era of the “dual rectifier” style guitar amplifier—the sound that powered countless ’90s punk, alternative-rock and metal records
It brings that ferocious tone into a pedalboard-friendly format, combining amp-and-cab emulation with modern stompbox convenience.

Key Features & Tone Characteristics

• Amp modelling engine: Utilises UA’s dual-engine UAFX technology to deliver “end-to-end” emulation of the original amplifier’s preamp, power amp, speaker/cabinet and mic chain.
• Selectable power tube & rectifier modes: Choose between EL-34 or 6L6 power-tube voicings, and select solid-state or tube rectifier operation to shape feel and response.
• Built-in TS-style overdrive + preamp boost: Adds a stompy drive or tight boost stage ahead of the main amp simulation, letting you carve modern riffs with authority.
• Noise gate on board: High-gain tone demands tight control; the integrated gate helps keep your signal clean at high drive levels.
• Cabinet/mic simulation & room modelling: Six classic mic/cab combinations (British and American 4×12s, Celestion V30s, etc) drawn from legendary records, plus room modelling derived from UA’s OX Amp Top Box tech.
• Mobile/desktop control via UAFX Control app: Tweak hidden parameters, save custom presets, switch modes, and more via Bluetooth/USB.
• Pedalboard-ready format: Stereo ¼-inch I/O, USB-C for firmware updates, isolated 9 V DC power supply (centre-negative, min 400 mA) required.

Why It Matters

If you’re chasing the aggressive, thick, tight and saturated tone that defined bands like Foo Fighters, Incubus, Nevermore and Dream Theater during the 1990s, this pedal gives you that sonic signature without needing the full-sized amp head, cab and extensive wiring.
It’s built to integrate seamlessly into modern rigs—home studios, pedalboards, live rigs—or as a high-gain tone engine for recording direct or through FRFR systems.

Ideal Use Cases

• High-gain rock/metal guitarists who want a “chunky modern-metal” or “90s alt-rock” tone from a compact pedal.
• Recording direct into audio interfaces or live into PA/FRFR setups—especially where space, volume or cab load are constraints.
• Pedalboard users looking for a flagship amp-sim stomp with deep tone-shaping and no need to haul a 100 W tube head.
• Players who like tweaking — the power-tube/rectifier voicing options plus app-based presets make it flexible enough for subtle to extreme adjustments.

If you’re after a pedal that delivers the brute force, tight gain and iconic tone of the 1992 Rev F Dual Rectifier amp—and you want it in a format that fits a pedalboard or modern recording rig—the UAFX Knuckles ’92 Rev F Dual Rec Amplifier is an exceedingly strong choice. It offers depth, versatility, and the kind of tone many consider legendary, all without needing the full weight, footprint or cost of the original hardware.