The Universal Audio Ruby '63 Top Boost Amplifier is a premium amp simulator and cabinet emulator pedal that faithfully recreates the sound and feel of a vintage 1963 Vox AC30 Top Boost. Powered by Universal Audio's dual-engine processing, it delivers authentic tube amp response, speaker cabinet emulation, room ambience, and preset functionality in a compact pedal format.
Type
Amp Simulator / Cabinet Simulator Pedal
Model
UAFX Ruby '63 Top Boost Amplifier
Manufacturer
Universal Audio
Country of Manufacture
Malaysia
Era
2022�Present
Controls
Volume � Adjusts the amplifier output level.
Output � Controls the master output volume.
Bass � Adjusts low-frequency response.
Treble � Adjusts high-frequency response.
Boost � Controls the gain of the selected boost circuit.
Speaker Switch � Selects between Green, Blue, and Silver speaker cabinet models.
Amp Switch � Selects Top Boost, Normal, or Vibrato amplifier channels.
Boost Switch � Selects Boost, Off, or Brilliant boost voicings.
Input
1 � 1/4" Instrument Input
1 � USB-C Port
Output
2 � 1/4" Outputs (Mono/Stereo)
Power Supply
9V DC Center-Negative Adapter (400 mA minimum)
Notable Features
Dual-engine UAFX processing, authentic emulation of a 1963 Vox AC30 Top Boost, three amplifier channel models, three classic speaker cabinet emulations, integrated boost circuits, stereo operation, room microphone emulation, preset recall, true or buffered bypass operation, live and studio-ready cabinet simulation, USB-C connectivity for firmware updates and preset management, and high-headroom, low-latency processing. Designed to capture the dynamic response, harmonic complexity, and chime of a vintage British valve amplifier while offering the flexibility and consistency of a modern digital platform.