




UNIVERSAL AUDIO
UNIVERSAL AUDIO UAFX Knuckles 92 Rev F Dual Rec Amplifier
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Universal Audio UAFX Knuckles ’92 Rev F Dual Rec Amplifier – advanced guitar effect pedal delivering full amp-in-a-box modeling of a legendary early-90s high-gain amplifier. The dual-engine UAFX platform recreates the complete signal chain including preamp, power amp, speaker cabinet and microphones.
Three-channel architecture and dynamic control
The pedal provides clean, crunch and high-gain channels, allowing seamless transition from pristine tones to aggressive distortion. Selectable power tubes (EL34 or 6L6) and switchable rectifier modes (tube or solid-state) directly affect response, compression and playing feel.
Studio-ready tone without external processing
Built-in speaker and microphone configurations deliver mix-ready tones without external IR loaders. Integrated TS-style overdrive, preamp boost and noise gate allow tight, modern high-gain sounds without additional pedals. The unit can function as a full amp replacement or as a drive stage in front of an amplifier.
KEY FEATURES
- Authentic Dual Rectifier Rev F (1992) amp modeling
- 3 channels: clean, crunch, high-gain
- Dual-engine UAFX DSP processing
- Full signal chain emulation (preamp, power amp, cab, mic)
- 6 cab and mic configurations
- Built-in TS-style overdrive and preamp boost
- Integrated noise gate
- Selectable power tubes: EL34 / 6L6
- Switchable rectifier: tube / solid-state
- Cab simulation bypass option
- USB MIDI and mobile app control
TECHNICAL SPECIFICATIONS
- Type: amp modeling pedal
- DSP engine: dual UAFX engine
- Channels: 3 (clean / crunch / lead)
- I/O: 1x input, 1x output (6.3 mm jack)
- Presets: up to 4 onboard + Live mode
- Cab simulations: 6 configurations
- Controls: Gain, Bass, Mid, Treble, Presence, Volume
- MIDI: via USB
- Connectivity: Bluetooth app control
- Power: 9V DC, minimum 400 mA
- Construction: metal chassis
- Weight: approx. 0.45–0.6 kg

