Universal Audio UAFX Knuckles

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Universal Audio UAFX Knuckles

Universal Audio

UAFX Knuckles

4.8 Expert Rating

Product Info

Article Number: 601142
Model: UAFX Knuckles
Price: $438.90

* Prices may vary. Check retailer for current pricing and availability.

The Knuckles is a focused powerhouse for players craving that searing, high-gain tone. It’s a one-stop shop for killer amp and cab sounds, especially if you’re into modern metal or hard rock. If you’re tired of chasing those tones with a rack full of gear, this is a seriously impressive solution.

Product Description

  • Universal Audio UAFX Knuckles
  • Effect Pedal for Electric Guitar
  • Stereo amplifier and speaker emulation
  • High-gain sound of legendary punk
  • hard rock and metal bands
  • Built-in TS-style OD/boost
  • Noise gate
  • Live and preset modes
  • Customisable with the UAFX Mobile App
  • 6 Mic/speaker combinations: UK V30 (4x12 Marshall cabinet with V30‘s)
  • CA V30 (4x12 oversized cabinet with V30’s)
  • White 75 (4x12 Marshall cabinet with Celestion 75's)
  • 3 bonus cabs (2x12 EV12
  • 4x12 Celestion 80
  • 4x12 Brown via mobile app)
  • Power supply via power adapter - 9V DC
  • centre negative
  • 400 mA minimum
  • (e.g. Art. #543322# not included)
  • 2 Inputs: 6.3 mm jack (right input for stereo connections and 4-cable method)
  • 2 Line outputs: 6.3 mm jack (right output for stereo connections and 4-cable method)
  • USB Type-C connection for updates via computer
  • Dimensions (W x D x H): 9.2 x 14.1 x 6.5 cm
  • Weight: 0.567 kg
PROS
  • • Exceptional amp modeling delivers authentic high-gain tones, surprisingly nuanced.
  • • Noise gate is genuinely effective, taming unruly high-gain signals easily.
  • • The included cab simulations are remarkably convincing, a huge sound upgrade.
  • • UAFX app unlocks deeper customization and additional cab options, expanding versatility.
CONS
  • • Price point positions it as a premium investment for serious players.
  • • Limited tonal palette; primarily excels in hard rock and metal genres.
  • • Reliance on a power adapter can be inconvenient for pedalboard setups.

Product Video

Key Features

Effect Type Stereo amplifier and speaker emulation (high-gain)
Controls Drive, Level, Tone, Gate, Preset Select, Live Mode Switch
Bypass Type True Bypass
Power Supply 9V DC, centre negative, 400mA minimum (power adapter not included)
Connections 2 x 6.3mm Mono Inputs, 2 x 6.3mm Mono Outputs, USB Type-C
Dimensions 115mm (W) x 51mm (H) x 140mm (D)

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Frequently Asked Questions

The Knuckles leans more towards a specific high-gain aesthetic, while the Captor X offers broader amp and cab options; the Knuckles' noise gate is also notably better.
While the core sounds are excellent standalone, the app unlocks a wider range of cab simulations and allows for deeper parameter tweaking, significantly expanding its potential.
While technically possible, the Knuckles is optimized for guitar frequencies; bass tones will likely sound thin and lack the desired low-end punch.

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