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Universal Audio UAFX Knuckles '92 Rev F Dual Rec Amplifier
Get the raw sound of punk, alternative rock and metal
Knuckles '92 Dual Rec Amplifier delivers the searing high-gain sound that has driven legendary punk, hard rock and metal bands — from Foo Fighters and Incubus to Nevermore, Dream Theater and many more. With six classic microphone and speaker combinations, a built-in OD/Boost in the style of a well-known green effect pedal and an integrated Noise Gate, the UAFX Knuckles '92 brings the authentic, genre-defining sound of one of the wildest high-gain amps in the world straight to your feet.
Hook up to the Californian King of High Gain
Whether you're after the punchy power chords of punk, grunge and alternative rock anthems from Dave Grohl and Incubus or the complex aggression of Nevermore and Dream Theater's work, with the Universal Audio UAFX Knuckles '92 you've got one of the most versatile multi-channel amps ever built right on your pedalboard.
Discover a palette of Rectifier tones
Use the infamous green, orange and red channels of the original Rectifier amps to explore everything from perfect, shimmering cleans to bone-crushing crunch and glowing lead tones. Experiment with EL-34 or 6L6 power tubes and switch between solid-state and tube rectifiers to get ultimate control and feel over your tone.
Use the TS-style boost
Knuckles '92 features a classic TS-style overdrive — a proven component for tight, articulate playing — and a built-in preamp boost known for refined modern metal tones. Additionally, the built-in Noise Gate keeps your sound clear even at extreme gain settings, so you can make your listeners' jaws drop the moment you switch it on.
Explore a huge amp & cabinet collection
Knuckles '92 offers three hand-picked microphone and speaker combinations plus three bonus cabinets, all flawlessly captured with UA's exclusive Dynamic Speaker Modeling.
With the UAFX Mobile App you can customise all the key controls of the Knuckles '92 — from preamp settings and the bias of the power tubes to Live and Preset modes and much more. You can also discover artist presets created by the world's top guitarists and Rectifier enthusiasts.
Three standard speaker cabinets
- UK V30: 4x12 Marshall cabinet with V30s
- CA V30: 4x12 oversized cabinet with V30s
- White 75: 4x12 Marshall cabinet with Celestion 75s
Three bonus speaker cabinets from the UAFX app
- 1x12 EV12
- 4x12 Celestion 80
- 4x12 Brown
Get the unmistakable high-gain sound of punk, alternative rock and metal right onto your pedalboard! The Knuckles '92 Dual Rec Amplifier brings the legendary tones of the 90s that powered bands like Foo Fighters, Incubus, Nevermore and Dream Theater to you in a compact, versatile pedalbox.
With six mic and speaker combinations, a built-in TS-style overdrive and a noise gate, the Knuckles '92 pedal delivers authentic, genre-defining tones of one of the most iconic high-gain amps. Switch between channels, output tubes and rectifier modes and experiment with every facet of the Rectifier sound — from clean to searing lead tones.
- Based on the legendary 1992 Dual Rectifier
- Six mic and speaker combinations for versatile tonal options
- Built-in TS-style overdrive, preamp boost and noise gate for precise, modern metal tones
- Channel switching and selectable output tubes (EL34 or 6L6)
- Switchable solid-state or tube rectification for complete control over your feel
- Controllable via the UAFX Mobile App with expandable artist presets and detailed tone shaping
- Battery powered: Does not run on Battery power
- Bypass Mode: Buffered Bypass
- Country of Origin: Malaysia
- Dimensions (WxHxD): 92 x 65 x 141 mm
- Effect Type: Amp in a Box
- Genre: Modern Rock
- Housing size: Standard
- Modes: 3 Amplifier Simulations, 6 Speaker Simulations
- Mono / Stereo: Stereo In, Stereo Out
- Power Consumption: 400 mA
- Power supply: 9 VDC, Center negative
- Special Features: UAFX Mobile App
- Switches: Cab, Amp, Model
- Technology: digital
- Weight: 567 g
- Based on the legendary 1992 Dual Rectifier
- suitable for studio: yes
Pioneer in audio recording for more than 50 years
Founded in 1958 by Bill Putnam Sr., Universal Audio has long been synonymous with innovative recording equipment. As the favourite engineer of Frank Sinatra, Nat King Cole, Ray Charles and others, Bill was a passionate innovator who is regarded as the father of modern audio recording. Many of his legendary studio and equipment designs are still in use today. B. Putnam was the inventor of the modern mixing console, the multiband audio equaliser and he was the first engineer to use artificial reverb on commercial recordings. Alongside his friend Les Paul, Bill was also involved in the early development of stereophonic recording.
Putnam, known as a driven entrepreneur, founded three audio product companies during his long career: Universal Audio, Studio Electronics and Urei. All three companies built devices that were widely adopted after their introduction and would shape the studio sound for generations. The boutique compressors LA-2A and 1176 and the 610 tube console are among these legends. Artists such as Sinatra, the Beach Boys and Van Halen recorded their studio albums on the 610 console.
Universal Audio was re-established in 1999 by Bill's sons James Putnam and Bill Putnam Jr. The plan was twofold: on the one hand to faithfully reproduce classic analogue recording gear in their father's tradition; and on the other to bring the sound and spirit of vintage analogue technology into the new digital recording tools .
By now impressive effects pedals for guitarists and specialised guitar-recording tools such as the Universal Audio OX are also part of the range and are extremely popular with fans of outstanding tone.
