Universal Audio UAFX Ruby '63 Top Boost Amplifier - Guitar Effect

The Universal Audio UAFX Ruby '63 Top Boost Amplifier is a premium guitar effects pedal that faithfully emulates the iconic 1963 Vox AC30 Top Boost amplifier. Designed for guitarists seeking authentic tube amp tone in a compact pedal format, it features dual-engine processing for rich, dynamic sound. With selectable speaker cabinet emulations, stereo operation, and both true and buffered bypass options, this pedal delivers studio-quality amp tones directly to your pedalboard.

Advantages

Experience the legendary sound of a 1963 Vox AC30 Top Boost with modern convenience. The UAFX Ruby offers three classic speaker cabinet emulations (Silver Bell, Blue Bell, Gold) plus bonus cabs via the UAFX Control app, allowing you to tailor your tone. Its dual-engine DSP provides exceptional clarity and responsiveness, while the selectable bypass ensures your signal remains pristine. The stereo inputs and outputs enable expansive stereo setups, and the USB-C port allows for easy firmware updates.

Suitable for

• Electric guitarists seeking authentic Vox AC30 tones
• Studio and live performers requiring versatile amp emulation
• Musicians building compact pedalboards with high-quality effects
• Players who value both true bypass and buffered bypass options

Key specifications

• Pedal Type: Amplifier Emulation Pedal
• Emulated Amplifier: 1963 Vox AC30 Top Boost
• Speaker Cabinet Emulations: 3 classic cabs (Silver Bell, Blue Bell, Gold) + bonus via app
• Controls: Volume, Cut, Boost, Bass, Treble, Gain, Speaker/Mic selector, Live/Preset switch
• Inputs: 2 x 1/4" TS (Input 1, Input 2 for stereo)
• Outputs: 2 x 1/4" TS (Output 1, Output 2 for stereo)
• USB Port: USB-C (for firmware updates)
• Power Requirement: 9V DC, center-negative, 400mA minimum (isolated power supply recommended)
• Bypass Type: Selectable True Bypass or Buffered Bypass
• DSP Engine: Powerful UAFX dual-engine processing
• A/D D/A Conversion: 24-bit/192 kHz
• Input Impedance: 500 kOhms
• Output Impedance: 500 Ohms
• Chassis Material: Robust metal chassis
• Included Software: UAFX Control App (registration, firmware updates, bonus cabs)
• Features: Stereo operation, Live/Preset modes, Free bonus speaker cabs via app

Recommendations

For best performance, use an isolated 9V DC power supply with at least 400mA current. The UAFX Control app unlocks additional speaker cabinet emulations and allows for firmware updates. This pedal is ideal for guitarists who want the classic Vox AC30 sound without the bulk of a traditional amp.