Introduction
The Universal Audio UAFX Ruby '63 Top Boost Amplifier pedal is a stereo amp and cabinet emulation device designed to deliver authentic '60s British tube combo sounds. It features vibrato, room modeling, and a selection of speakers, cabinets, and boosts. The pedal supports both live and preset modes and offers extensive customization options through the UAFX mobile app.
Figure 1: Front view of the UAFX Ruby '63 Top Boost Amplifier pedal, showcasing its controls and footswitches.
What's in the Box
- UAFX Ruby '63 Top Boost Amplifier Pedal
Note: A power supply is not included and must be purchased separately. The pedal requires a 9VDC power supply with a minimum of 400mA.
Setup
Connecting the Pedal
The UAFX Ruby '63 pedal features stereo inputs and outputs for versatile connectivity. Ensure all connections are secure before powering on the device.
Figure 2: Rear panel of the UAFX Ruby '63 pedal, illustrating the 1/MONO and 2/STEREO input/output jacks, 9VDC power input, and USB port.
- Power Connection: Connect a 9VDC power supply (not included) to the 9VDC input jack. The pedal requires a minimum of 400mA.
- Input Connection: Connect your instrument (e.g., guitar) to the 1/MONO IN jack. For stereo input, connect a second instrument or stereo source to the 2/STEREO IN jack.
- Output Connection: Connect the 1/MONO OUT jack to your amplifier or audio interface. For stereo output, connect the 2/STEREO OUT jack to a second amplifier or stereo input on your audio interface.
- USB Connection: The USB port is used for firmware updates and connecting to the UAFX mobile app for advanced features and customization.
Operating the UAFX Ruby '63
The Ruby '63 pedal offers a range of controls to shape your tone, emulating the characteristics of a classic British tube amplifier.
Controls Overview
- VOLUME: Adjusts the overall output level of the pedal.
- CUT: Controls the high-frequency cut, similar to the tone cut control on vintage amplifiers.
- OUTPUT: Fine-tunes the output level.
- SPEAKER Switch: Selects between different speaker cabinet emulations (e.g., SILVER, BLUE, GREEN).
- ALT/STORE Switch: Toggles between alternate functions of knobs and saves presets.
- CHANNEL Switch: Selects between different amplifier channels (e.g., BRIL, NORM, VIB).
- ROOM: Adjusts the amount of room ambiance.
- INTENSITY: Controls the intensity of the vibrato effect.
- SPEED: Controls the speed of the vibrato effect.
- BASS: Adjusts the low-frequency response.
- TREBLE: Adjusts the high-frequency response.
- BOOST Switch: Engages different boost types (e.g., OFF, BOOST).
- ON Footswitch: Toggles the pedal effect on/off.
- PRESET Footswitch: Recalls saved presets or toggles between live and preset modes.
Modes of Operation
The Ruby '63 supports both live mode and preset mode, allowing for flexible performance and tone recall.
- Live Mode: In this mode, the pedal's sound is determined by the physical position of its knobs and switches.
- Preset Mode: Allows you to save and recall your favorite settings. Use the UAFX mobile app to manage and store multiple presets.
UAFX Mobile App Integration
The UAFX mobile app provides extended functionality and customization options for your Ruby '63 pedal. Connect your pedal via Bluetooth to:
- Customize footswitch assignments.
- Recall and archive your presets.
- Unlock additional features and speaker cabinets.
- Download artist presets.
- Perform firmware updates.
Figure 3: The UAFX mobile app provides comprehensive control over pedal settings and presets.
Maintenance
To ensure the longevity and optimal performance of your UAFX Ruby '63 pedal, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Avoid abrasive cleaners or solvents.
- Storage: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures.
- Power: Always use a compatible 9VDC power supply with sufficient current (400mA minimum). Disconnect power when not in use for extended periods.
- Firmware Updates: Regularly check for and install firmware updates via the UAFX mobile app to ensure the pedal has the latest features and bug fixes.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound output. | Incorrect power supply, loose cables, pedal bypassed. |
|
| Poor sound quality / Noise. | Improper gain staging, faulty cables, interference. |
|
| UAFX App connection issues. | Bluetooth interference, app not updated, pedal not in pairing mode. |
|
Specifications
- Model: GPM-RUBY
- Product Dimensions: 4"D x 4"W x 2"H (10.16 cm D x 10.16 cm W x 5.08 cm H)
- Item Weight: 562 Grams (1.24 Pounds)
- Power Requirements: 9VDC, 400mA minimum (power supply not included)
- Connectivity: Mono/Stereo Input, Mono/Stereo Output, USB-C (for updates), Bluetooth (for UAFX App)
- Features: Dual-engine processing, speaker cabinet emulation, mic and room tones, treble booster, preamp boost, speaker swaps, vibrato, live/preset modes.
Warranty and Support
For detailed warranty information and technical support, please visit the official Universal Audio website or contact their customer service. You can also explore additional resources and product information on the Universal Audio Store on Amazon.
Protection plans are available for purchase separately to extend coverage for your device:
- 3-Year Protection Plan
- 4-Year Protection Plan
- Complete Protect: One plan covers all eligible past and future purchases (monthly billing)




