Universal Audio UAFX Knuckles '92 Rev F Dual Rec Amplifier
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Universal Audio
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A Classic Big Sound: The Rectifier Spirit in the UAFX Range
The UAFX Knuckles '92 Dual Rec Amplifier targets guitarists who want to capture the character of a high-gain amp that became a benchmark since 1992, especially for massive rhythms and sharp distortions. This pedal condenses the DNA of an iconic Rectifier (Rev F version) into a pedalboard format, with a "complete amp" approach: preamp, power amp, cabinets/mics, and room behavior, allowing you to go from a tight clean to a snappy crunch, then to ultra-articulated modern distortion.Within the UAFX range, the Knuckles '92 positions itself as a dedicated solution for high-gain rock and metal tones, aiming to deliver a realistic and immediate amp feel without sacrificing the settings that define this type of machine's personality.
Who It's For and Which Styles the Knuckles '92 Excels In
This pedal is tailored for intermediate to advanced guitarists seeking an "album-ready" sound quickly, yet it remains intuitive if you like to start from one channel and fine-tune by playing. In punk and alternative rock, it delivers dense and snappy power chords with a sharp attack and solid low end. In hard rock and metal, it enables tight rhythm work (palm mutes, alternate picking) and leads that cut through without collapsing in the mix.In the studio, the Knuckles '92 facilitates recording consistent high-gain sounds, with an integrated noise gate to control hiss when gain is high. Live, its pedal format and channel options allow seamless switching between clean/crunch/lead scenes without multiplying gear, and its stereo mode opens the door to wider rigs (two amps, two console inputs, or two monitors).
Technical specifications
| Effects | Distortion / Overdrive / Fuzz, Modeling Processor | EQ | 3 channels |
| Technology | Digital | Type | sector |
| Format | Pedal | Use | electric guitar |
| Cabinet Simulator | 6 | Color | Grey |
Questions frequently asked
Is the Knuckles '92 suitable for metal and nu-metal tones?
Its green, orange, and red channels cover from tight clean to high-gain saturation. The TS-style overdrive tightens the bass for palm-mutes, while the built-in noise gate keeps stops crisp.
Can it replace an amp and speaker cabinet simulation for recording?
This pedal combines preamp, power amp stage, speaker cabinet simulations, and room dynamic modeling derived from the OX universe. Six mic/cab combinations are offered, including UK V30, CA V30, and White 75.
What stereo connections does this UAFX pedal have?
There are two inputs and two outputs on 6.35 mm TS jacks. The right jacks are dedicated to stereo connections and use in 4-cable mode.
How to choose between EL-34, 6L6, and rectifier types?
The UAFX mobile app provides access to selecting EL-34 or 6L6 power tubes, as well as tube or solid-state rectifiers. EL-34s lean toward a more biting attack, while 6L6s offer more low-end foundation. The tube rectifier adds sag and compression; the solid-state mode favors a firmer response.
What power supply is required for the Knuckles '92?
A 9 V DC center-negative regulated power supply capable of delivering at least 400 mA is required and sold separately.
