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UAFX Ruby '63 Top Boost Amplifier Manual

This article contains complete operating instructions for the UAFX Ruby '63 amp pedal.

 


 

A Letter From Bill Putnam, Jr.

Congratulations on your new UAFX pedal. We know that buying any new piece of gear requires an investment of time and money, and we aim to make your investment pay off!

At UA, we are dedicated to the idea of building “instant classics” — the type of music and audio gear that delivers album-worthy sounds to inspire you for decades.

UAFX pedals represent more than 20 years of research into vintage analog effects, coupled with next-generation digital engineering and rock-solid reliability.

Please let us know how we’re doing. Feel free to reach out to us via our website www.uaudio.com, and via our social media channels.

Thank you for your support, and enjoy your sonic exploration!

Sincerely,

Bill Putnam Jr.

 


 

Ruby '63 Quick Start

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Download Ruby '63 Quick Start Sheet

 


 

Ruby '63 Guitar Amp Emulator Overview

Get the British Invasion tones that inspired generations.

The UAFX Ruby '63 Top Boost Amplifier pedal gives you the quintessential British valve amp beloved by artists and producers for over 60 years, from Queen to U2 to Radiohead.

Built on powerful dual-engine processing and UAD modeling expertise, the Ruby '63 effects pedal delivers choirboy cleans, complex overdrive, and classic vibrato.

Now You Can

  • Get the valve amp that powered the British Invasion, perfectly emulated in a stompbox
  • Stay inspired with rich Top Boost tones and tube-powered vibrato
  • Take ace studio amp tones anywhere, complete with legendary mic/speaker pairings and famous boost effects
  • Download artist tones, customize features, explore presets, and more with UAFX mobile app

Experience British Tube Amp Tones, Stage and Studio

Whether it's replacing your amp rig and going direct to front-of-house on stage, or recording tracks into your DAW — Ruby '63 gives you the inspiring, album-ready tones of an expertly miked "golden unit" vintage tube combo, within seconds.

Explore Normal, Brilliant, and Vibrato Channels

Ruby '63 is the only stompbox that gives you the Normal, Brilliant, and Vibrato channels from the original amp — so you can fly to Ireland, London, or Liverpool with the flip of a switch. From mellow to chime to grind, it's all here.

Push the Limit with Classic Boosts

Ruby '63 packs classic boosts, right onboard. Namely, the legendary '60s Dallas Rangemaster germanium treble booster and the preamp of a '70s Maestro EP-3 tape delay.* Just flip the Boost switch for searing layered tones that put IR-based amp modelers in the bin.*

* Product names used herein are trademarks of their respective owners, which are in no way affiliated with Universal Audio Inc. These name(s) are used solely to identify products studied in the creation of the sound models found in Ruby '63 Top Boost Amplifier.

Take Your Tone to the Tailor

With built-in mic and speaker pairings from our award-winning OX Amp Top Box, Ruby '63 lets you tailor your classic Brit amp tones like you took them to Savile Row.

Key Features

  • Powerful UAFX dual-engine delivers the most authentic '60s British tube combo sound ever placed into a stompbox
  • Includes the world's best speaker cabinet, mic, and room tones derived from the award-winning OX Amp Top Box
  • Features "hot rod" treble booster, preamp boost, and speaker swaps, plus free additional downloadable speaker cabinets and mics upon registration
  • Bypass cabinet/mic emulations and use in front of your amp for added tonal flavor and overdrive sounds
  • UAFX mobile app lets you customize footswitches, recall and archive your presets, unlock additional features, download artist presets, and more
  • Timeless UA design and craftsmanship, built to last decades

 

UAFX Control software

UAFX Control is the companion software for UAFX pedals. To get UAFX Control software, go here.

UAFX Control Desktop App – The UAFX Control desktop app is for pedal registration, getting free bonus speaker cabinets, and firmware updates. Firmware updates for UAFX may be provided to improve or add functionality, and are installed over a USB connection to a computer, using a USB-C cable (not included).

UAFX Control Mobile App –The UAFX Control mobile app is for preset management, getting free bonus effects and speaker cabinets, global settings such as footswitch modes, and registration.

Free Bonus Speaker Cabinets

Register your pedal with UAFX Control software to get three bonus speaker cabinets for more great tone options. To get UAFX Control, visit:

uaudio.com/uafx/start

 


 

Ruby '63 Power

Note: Power supply sold separately.

UAFX pedals require an isolated 9 volt DC, center negative, 2.1 x 5.5 mm barrel connector (same as standard Boss connectors) power supply, which can provide 400 mA (milliamps) of current. Each UAFX pedal must be connected to a separate power supply, or connected to an isolated power connection from a multi-output power supply. Connect the power supply to the 9VDC connector on the pedal’s rear panel.

When you first connect your UAFX pedal to a power supply, the Effect LEDs cycle, showing that the pedal is starting up. The startup sequence takes about 15 seconds.

If power to your UAFX pedal is interrupted during operation, audio stops. UAFX Ruby '63 requires power to pass audio through the pedal.

Important Power Notes

  • Each UAFX pedal requires 400 mA of current. Make sure your power supply can deliver at least 400 mA to the pedal for proper operation and performance.
  • An isolated supply provides power and grounding that is electrically separated, usually by means of a transformer for each connector. Some low-cost power supplies might have separate connectors, but might not provide true ground and power isolation, causing noise and ground loop hum.
  • If your power supply has multiple outputs, make sure that each output provides true isolation, or that you connect your pedal to its own power supply.
  • It’s OK to connect a power supply that can deliver more than 400 mA. The pedal only draws the current it needs and will not be damaged if the supply is 9VDC.
  • If your power supply is not isolated, you might hear additional hum in the pedal signals. If the supply cannot provide 400 mA of current, the pedal might not operate properly, even if the LEDs and switches seem to be working.

 


 

Ruby '63 Connections

All UAFX audio jacks accept 1/4" (6.35 mm) unbalanced TS (Tip-Sleeve) instrument cables. Although TRS (Tip-Ring-Sleeve) cables may be used, they offer no benefit over TS cables.

Mono and stereo connections

Your UAFX pedal senses which jacks are connected and adjusts the internal signal routing automatically. Stereo inputs are processed in true stereo, and output as either stereo or mono depending on the connected inputs.

Important: You must connect to UAFX’s IN 1/MONO jack. The IN 2/STEREO jack doesn’t work by itself without the IN 1/MONO connection.

Buffered output

Ruby '63’s output is always buffered and there is no analog dry-through. The pedal must be powered to pass audio. When bypassed, the audio signal remains analog from input to output, and is not subject to digital conversion.

4-cable mode

4-cable mode is a special routing mode, which allows you to add your Ruby '63 pedal to your effects-loop equipped guitar amplifier as a separate channel. Because your pedal is routed directly to your guitar’s power amp and bypasses your amplifier’s preamp section, you get much more realistic UAFX tones from your amplifier with 4-cable mode. With this feature, you can also switch between your guitar amplifier’s built-in preamp and the sounds in Ruby '63, effectively adding two channels to your amplifier.

To connect your pedal and amp for 4-cable mode, see the connection examples below. To enable 4-cable mode, see the UAFX Control Mobile App Manual.

Warning: Turn off your amplifier before wiring the pedal and enabling 4-cable mode. If you enable 4-cable mode without the cables wired correctly, you can cause extreme feedback.

Tip: When you’re playing through a real speaker cabinet, you might want to disable the pedal’s cab emulation by pressing the pedal's Speaker switch until its LED is unlit.

UAFX pedal operating levels

UAFX pedals are designed with enough headroom to easily accommodate instrument levels and amp effects loop levels, but they can also handle line-level gear such as synthesizers and audio interfaces. The pedals are voiced for instrument levels, so you may need to reduce the line out level of the gear you’re connecting into the pedals to avoid overdriving the effects.

USB-C port

The USB-C port is for pedal registration and firmware updates only, via the UAFX Control desktop app for Mac and Windows computers. You can connect to any type of USB port on the computer, but you may need an adapter.

Pair button

The PAIR button and LED are for pairing the pedal with a mobile device when using the UAFX Control mobile app.

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Connection Examples

Tip: When playing through a real guitar amplifier and speaker cabinet, you might want to bypass the speaker cabinet emulation by pressing the pedal's Speaker switch until its LED is unlit.

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Mono in > Mono Out

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Mono output > 1-input audio interface

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Stereo output > 2-input audio interface

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Mono in > Stereo out (guitar amps)

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Mono in > Stereo out (full range powered speakers or PA)

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Stereo in > Stereo out

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Pedal bypassing amp’s preamp with effects loop return

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Pedal in dual amp setup bypassing amps’ preamps with effects loop returns

 


 

4-Cable Mode

4-cable mode with the Ruby '63 amp pedal lets you add another switchable channel to any real guitar amplifier that has an effects loop. This special mode lets you switch between your guitar amplifier’s built-in preamp section and the sounds in your pedal.

Warning: Turn off your amplifier before wiring the pedal and enabling 4-cable mode. If you enable 4-cable mode with incorrect wiring, you can cause extreme feedback.

How 4-cable mode works

  • When a UAFX amp pedal is on, the amp emulation is heard, and the real amp’s preamp section is bypassed.
  • When a UAFX amp pedal is off, the real amp’s preamp section is heard, and the pedal is bypassed with analog dry-through.

4-cable mode notes

  • 4-cable mode is only available on UAFX amp pedals (Dream '65, Ruby '63, and Woodrow '55).
  • If the pedal is not already in Live | Preset mode when you enable 4-cable mode, a confirmation appears, and the pedal automatically switches switches to Live | Preset mode after you confirm.
  • When you’re playing through a real guitar amplifier and speaker cabinet, you might want to disable the pedal’s speaker cabinet emulation by pressing the pedal's Speaker switch until its LED is unlit.
  • You may need to adjust the UAFX pedal’s Output knob lower than you normally would, because the effects loop return on your amp is unattenuated.
  • If you are using other pedals in your effects loop, place them between the first UAFX amp pedal’s 2/Stereo output and the Return input on your amp’s effects loop. With this wiring, the other pedals in the effects loop still process audio, even when the pedals are bypassed.
  • Front-of-amplifier effects, such as distortion and overdrive pedals, should be placed between the instrument and the first pedal’s 1/Mono input.

Multiple UAFX amp pedals

To use multiple UAFX amp pedals in 4-cable mode, see the examples below. With multiple pedals configured in 4-cable mode, you can switch between preset and live sounds on the amp pedals and the sounds in your real amplifier for even more available sounds. When you use multiple amp pedals in 4-cable mode, the earliest amp pedal enabled in the chain is the amp pedal you hear.

Tip: To switch between sounds on different UAFX amp pedals with multiple pedals in 4-cable mode, enable sounds on multiple pedals. The first pedal that is enabled is the pedal you hear. When you bypass a pedal that is earlier than another enabled pedal, you will hear the next enabled pedal. In this way you can switch between sounds on multiple pedals.

To enable 4-cable mode

  1. Power off your real amplifier.
  2. Configure the cables as illustrated and described below.
  3. Connect to the pedal with the UAFX Control mobile app, and open the pedal Settings screen.
  4. In the UAFX Control mobile app, under 4-Cable Mode, tap On. A confirmation is displayed.
  5. Tap Enable 4-Cable Mode in UAFX Control mobile. The pedal enters 4-cable mode.
  6. Turn your amplifier on.

You can now hear the UAFX amp pedal when Live mode or Preset mode is enabled, and your real amplifier’s preamp channel when the pedal is disabled.

4-cable mode connections

See the diagrams and sections below for 4-cable mode connections with one, two, or three UAFX amp pedals.

One UAFX amp pedal

Use 4-cable mode with one UAFX amp pedal to add another switchable channel to your real effects-loop equipped guitar amplifier.

  1. Connect your instrument to the 1/Mono input on your UAFX amp pedal.
  2. Connect the 1/Mono output from the UAFX amp pedal to the main input on your amplifier.
  3. Connect the effects loop Send output on your amplifier to the 2/Stereo input on your UAFX amp pedal.
  4. Connect the 2/Stereo output from the pedal to the effects loop Return input on your amplifier.
  5. Place any front-of-amplifier effects between your instrument and the UAFX amp pedal, and place any other effects loop effects between the pedal’s 2/Stereo output and the effects loop return input on your amplifier.

UAFX amp pedal enabled

This diagram shows the signal flow when the UAFX amp pedal is enabled. Your signal is colored with the full amp tone from the pedal and routed to your real amplifier’s effects loop return, bypassing your real amplifier’s input jack and preamplifier section. Any effects placed in your amplifier’s effects loop return are heard.

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UAFX amp pedal bypassed

This diagram shows the signal flow when the UAFX amp pedal is bypassed. Note that your signal passes through the pedal with no pedal amp tone, and into the main input on your real amplifier. Any effects placed before your amplifier’s effects loop return are heard.

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Two UAFX amp pedals

To connect two UAFX amp pedals in 4-cable mode, you need a total of six cables. Wire the pedals as described and shown in the diagram below. In this mode, the earliest enabled UAFX amp pedal is the one you hear, even when the other UAFX amp pedal is enabled. Looking at your pedals from the top, this would be the UAFX amp pedal furthest to the right. Any effects placed before your amplifier’s effects loop return are heard.

  1. Connect your instrument to the 1/Mono input on your first UAFX amp pedal.
  2. Connect the 1/Mono output from the first pedal to the 1/Mono input on the second pedal.
  3. Connect the 2/Stereo output from the first pedal to the effects loop Return input on your amplifier.
  4. Connect the 1/Mono output from the second pedal to the main input on your amplifier.
  5. Connect the 2/Stereo output from the second pedal to the 2/Stereo input on the first pedal.
  6. Connect the effects loop Send output on your amplifier to the 2/Stereo input on the second pedal.
  7. Place any front-of-amplifier effects between your instrument and the first UAFX amp pedal, and place any other effects loop effects between the first pedal’s 2/Stereo output and the effects loop return input on your amplifier.

6-Cable-Diagram.png

Three UAFX amp pedals

To connect three UAFX amp pedals in 4-cable mode, you need a total of eight cables. Wire the pedals as described and shown in the diagram below. In this mode, the earliest enabled pedal is the one you hear, even when one or both of the other two pedals are enabled. Looking at your pedals from the top, this would be the pedal furthest to the right. Any effects placed before your amplifier’s effects loop return are heard.

  1. Connect your instrument to the 1/Mono input on your first UAFX amp pedal.
  2. Connect the 1/Mono output from the first pedal to the 1/Mono input on the second pedal.
  3. Connect the 1/Mono output from the second pedal to the 1/Mono input on the third pedal.
  4. Connect the 2/Stereo output from the first pedal to the effects loop Return input on your amplifier.
  5. Connect the 2/Stereo output from the second pedal to the 2/Stereo input on the first pedal.
  6. Connect the 2/Stereo output from the third pedal to the 2/Stereo input on the second pedal.
  7. Connect the 1/Mono output from the third pedal to the main input on your amplifier.
  8. Connect the effects loop Send output on your amplifier to the 2/Stereo input on the third pedal.
  9. Place any front-of-amplifier effects between your instrument and the first UAFX amp pedal, and place any other effects loop effects between the first pedal’s 2/Stereo output and the effects loop return input on your amplifier.

8-Cable-Diagram.png

 


 

Ruby '63 Operation

Live Mode and Preset Mode

Ruby '63 is set up in Live | Preset mode by default. You can use the UAFX Control mobile app to change footswitch assignments.

In Live mode, the sound reflects the current positions of the knobs, switches, and LEDs on the pedal, and the left footswitch toggles the Live mode effect on/off.

In Preset mode, you hear the settings that are stored as a preset, and the current positions of the knobs and switches do not reflect the sound. Instead, all knob and switch positions are internally set to their stored positions, and the right footswitch toggles the preset effect on/off.

You can store a preset you’ve created with your own settings by holding down the ALT/AMP/STORE switch until the green PRESET footswitch LED blinks rapidly (about 0.5 seconds).

Live Mode

To enter Live mode, press the left footswitch. Press the left footswitch again to toggle the effect on/off. The left footswitch LED is lit red when the Live mode effect is on.

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Preset Mode

To enter Preset mode, press the right footswitch. Press the right footswitch again to toggle the preset on/off. The right footswitch LED is lit green when the preset is on.

Note: The left and right footswitch functions can be changed in the UAFX Control mobile app.

golden-switches-on-led.png

Stored Preset

You can store a preset on your UAFX pedal, and recall it using the right footswitch. All presets you store, and other artist and factory presets, are available in the UAFX Control mobile app.

When you store a preset while in Live mode, the position of all knobs and switches on the pedal are saved. The preset also stores ALT knob positions, such as the alternate settings for the vibrato circuit. When you make a great sound in Live mode, storing it is as easy as holding down the ALT/AMP/STORE switch until the green PRESET footswitch LED blinks rapidly (about 0.5 seconds).

When you store a preset while in Preset mode, only those knobs and switches that have changed since you loaded the preset are saved. So, when saving in Preset mode, what you hear is what is saved, and not the current positions of the knobs and switches.

To store your sound as a preset

  1. Set your sound as you want it stored in the preset.
  2. Press and hold the ALT/AMP/STORE switch in the down position until the green PRESET footswitch LED blinks rapidly (about 0.5 seconds).

Preset Notes

  • The settings for Preset mode and Live mode are completely independent.
  • When you move a knob or switch in Preset mode, the settings for the sound immediately jump to the new knob or switch position.
  • You can view and audition all of your pedal’s presets with the UAFX Control mobile app.
  • Presets can only be stored when the pedal is not bypassed.

 


 

Ruby '63 Controls

The following controls are available on Ruby '63.

Volume

Adjusts the amp’s gain. As you increase volume, the character of the amp changes, becoming more overdriven and compressed. When the volume knob is set at the minimum, you will still hear sound from the pedal. The minimum level has been adjusted to provide the lowest amount of usable volume that the original hardware can provide. As you turn the volume knob up, the output volume is automatically adjusted to compensate.

Note: This is the volume control on the original amp. For clean “post-amp” volume adjustments, use the Output control.

Cut

Reduces high frequencies by filtering the power amp. As you rotate this knob clockwise, the amp tone becomes darker.

Note: The range of the Cut knob has been adjusted to more easily find the 'sweet spot” for this control. The original hardware had a narrow range where the Cut knob had an audible effect. The amount of available Cut EQ is identical to the original amp, but the usable range for this knob has been expanded.

Output

Adjusts the output level from the pedal. When the Output volume is set at noon (running direct or into other pedals), it will be roughly the same level as your bypassed volume.

Output volume allows you to set the level for your setup. This control is not available on the original amplifier.

Bass / Room

Adjusts two different settings, depending on the position of the Alt / Amp / Store switch.

  • AMP mode: Reduces the low frequency response of the amp’s tone stack on the Brilliant channel only.
  • ALT mode: Adjusts the amount of room tone mixed into the signal.

Notes and tips

  • Room amount only affects your sound when you use a speaker cabinet. When the speaker cabinet is bypassed, Room has no effect. The Speaker LED blinks rapidly to indicate the knob is inactive.
  • Set Room to noon for a good starting point, and add or remove room to taste. Setting Room fully off is like recording your amp in an isolation booth. Turning up the Room knob adds ambience from the room microphones set up in the tracking room of a studio.
  • There is no fully wet Room sound.

Treble / Speed

Adjusts two different settings, depending on the position of the Alt / Amp / Store switch.

  • AMP mode: Reduces the high frequency response of the amp’s tone stack on the Brilliant channel only.
  • ALT mode: Adjusts the amp’s vibrato speed.

Notes

  • The Bass and Treble knobs only work with the Brilliant channel, as with the original hardware.
  • The Bass and Treble knobs cut bass and treble frequencies as you rotate them clockwise (in effect, they work in reverse of most EQ knobs).
  • As with the original tube amp, vibrato is only available when the Vibrato channel is selected.

Bass and Treble use notes

The bass and treble knobs are extremely interactive.

  • When bass and treble are turned all the way up (all the way to the left), the midrange is reduced and the bass and treble are increased in a very extreme “smiley-face” EQ curve.
  • Turn bass and treble up to around noon for more midrange and a more natural, flatter and fuller tone.
  • A lot of usable sounds can be found by adjusting the bass and treble knobs to similar positions.

 

Boost / Intensity

Adjusts the amount of boost applied to the amp circuitry. See Ruby '63 Channels for details about the available boost types for each channel.

In ALT Mode, adjusts the amp’s vibrato intensity.

Notes

  • To bypass the boost circuit, set Boost to OFF.
  • To bypass the vibrato circuit on the Vibrato channel, in ALT mode, set Intensity to OFF.
  • As with the original tube amp, vibrato is only available when the Vibrato channel is selected.

Speaker

Push this switch up or down to change the speaker cabinet and microphone. When you push the switch repeatedly in the same direction, the pedal cycles through all available speaker cabinets.

Tip: Register your pedal to get free bonus speaker cabinets.

Speaker Type LED

The currently selected speaker cabinet is indicated by this LED. A red LED indicates that the effect printed on the pedal is selected. A bonus speaker cabinet is selected when an LED is green (the bonus speaker cabinets don't have labels).

When the LED is off, the amp is active but no speaker cabinet simulation is applied.

Tip: When playing through a real guitar amplifier and speaker cabinet, you might want to bypass the speaker cabinet emulation by pressing the pedal's Speaker switch until its LED is unlit.

Alt / Amp / Store

In AMP mode, the standard knob controls are available for the amp.

In ALT mode, room amount and vibrato speed and intensity controls are available on the Bass, Treble, and Boost knobs.

To store a preset, press and hold the ALT/AMP/STORE switch in the down position until the green PRESET footswitch LED blinks rapidly (about 0.5 seconds).

Channel

Ruby '63 includes three channels, each of which provides different amp character and features. The boost type is also unique to each channel.

Use the Channel switch to select the amp’s input channel, and the Boost knob to push the input of the amp for more added gain. See Ruby '63 Channels for more details about the channels.

  • NORMAL is based on the classic '61 “non-top-boost” amplifier. The Boost knob adds gain from a germanium treble booster circuit to the amp’s input.
  • BRIL is the amp’s Brilliant channel, based on the classic '63 “top-boost” amplifier. The Boost knob adds gain from the preamp of an EP-III tape echo.
  • VIB is the amp’s vibrato channel, based on the classic '63 “top-boost” amplifier. The boost knob adds clean boost to the amp’s input.

Left Switch LED

By default, the left footswitch LED is lit red when Live mode knob and switch settings are active.

Other states for the left footswitch LED are detailed in Footswitch Modes.

Left Footswitch

By default, press to toggle the Live mode sound on/off with the current knob and switch settings.

This footswitch can also toggle other options, depending on the pedal footswitch mode, as detailed in Footswitch Modes.

Preset Footswitch LED

The preset footswitch LED is lit green when stored settings are active. There are other modes for the right footswitch LED, as detailed in Footswitch Modes.

Right Footswitch

By default, press to toggle the Preset sound on/off.

This footswitch can also toggle other options, depending on the pedal footswitch mode, as detailed in the table below.

 


 

Ruby '63 Footswitch Modes

With the UAFX Control mobile app, you can change the operation of your pedal and your pedal’s footswitches for your amplifier setup and performance preferences. For example, if you use Ruby '63 as your main amplifier, and you don’t need to bypass your pedal, you can use a footswitch mode to toggle boost and vibrato on and off.

For more details about footswitch modes and how to enable them, see the UAFX Control Mobile App Manual.

Mode

Left Footswitch

Right Footswitch

Live | Preset

Live mode on/off

Preset on/off

Boost | Live/Preset

Boost on/off

Live mode/Preset toggle

Vibrato | Live/Preset

Vibrato on/off

Live mode/Preset toggle

Boost | Vibrato

Boost on/off

Vibrato on/off

4-Cable Mode

Live mode on/off

*If Live and Preset are off, you hear your amp’s sound.

Preset mode on/off

*If Live and Preset are off, you hear your amp’s sound.

 


 

Ruby '63 Speaker Cabinets

Each speaker, cabinet, and mic setting has a unique sound. Toggle up or down through the list with the Speaker switch. When you register your pedal with UAFX Control software, you get three free bonus speaker cabinets (green LEDs).

Note: The speaker cabinet labels on the pedal apply only when the speaker LED is red. When the speaker LED is green, the active speaker name is visible in the UAFX Control mobile app.

Switch label

LED Color

Active Speaker

Speaker/Cab/Mic*

Notes

SILVER

Red

Silver

Rare 15W Celestion Silver Bulldog speakers in a 2x12 combo cabinet, mic'd with a 421.

High end warmth and sheen, with open midrange.

BLUE

Red

Blue

Original Celestion Blue Bulldog speakers in a 2x12 combo cabinet, mic'd with a 57.

Classic speaker with more high end and chime.

GREEN

Red

Green

Modern Celestion G12Hs speakers in a 2x12 combo cabinet, mic'd with a 160 ribbon mic.

More midrange honk and tamer highs, thicker when used with distortion.

SILVER

Green

Blue Mod

1x12 AC15 cabinet with Blue Bulldog speaker, mic'd with a 57.

Brighter and with more chime, clarity, and jangle than vintage blue.

BLUE

Green

Match

2x12 Matchless cabinet with Celestion G12Hs, mic'd with a 57.

More muscular, modern take on the Ruby sound. Great with an overdrive or distortion pedal in front of the amp.

GREEN

Green

Gold

2x12 Two-Rock cab with Celestion Golds, mic'd with a 421 condenser mic.

Narrower sound, midrange forward, thicker with less high end.

None

Off

External

No emulated cabinet

Use with a real guitar cabinet or external cabinet emulation.

 

* Product names used herein are trademarks of their respective owners, which are in no way affiliated with Universal Audio Inc. These name(s) are used solely to identify products studied in the creation of the sound models found in Ruby '63 Top Boost Amplifier.

 


 

Ruby '63 Channels

Each Ruby '63 amp channel has a unique sound, controls, and boost circuitry. To increase the amount of gain to the input of each channel, rotate the Boost knob clockwise. When the boost knob is turned all the way down to OFF, the boost circuitry is disabled and has no effect on amp color and gain.

Brilliant (BRIL)

The Brilliant channel is based on a '63 “top-boost” amplifier. The circuit incorporates an extra tube for more gain and more treble. This channel has less headroom before breakup, and more gain overall.

  • The Cut, Bass and Treble knobs provide the EQ for the Brilliant channel.
  • The Vibrato circuit is disabled. When turning the ALT mode knobs for Speed or Intensity, the Speaker LED blinks rapidly to indicate the knobs are inactive.
  • The boost knob adds input gain from an EP-III preamp. Turn this boost on at a low setting to smooth out the sound of the Brilliant channel.

Normal (NORM)

The Normal channel is based on a '61 “non-top-boost” amplifier. The amp features more headroom and lower overall gain than the top boost amplifier featured on the Brilliant channel.

  • The Cut knob provides the only EQ control for the Normal channel.
  • Bass and Treble knobs do not change the sound. When turning the knobs for Bass or Treble, the Speaker LED blinks rapidly to indicate the knobs are inactive.
  • The Vibrato circuit is disabled. When turning the ALT mode knobs for Speed or Intensity, the Speaker LED blinks rapidly to indicate the knobs are inactive.
  • The Boost knob adds input gain from a germanium-transistor based treble booster circuit. This provides a signature midrange-boosted gain sound heard on countless records.
  • This channel takes pedals well. Try a bright overdrive or distortion pedal in front of it.

Vibrato (VIB)

The Vibrato channel is based on a '63 “top-boost” amplifier, and is a uniquely-voiced channel with its own set of inputs and a unique sound. The Vibrato circuit is active.

  • Vibrato Speed and Depth controls are available in ALT mode.
  • The Cut knob provides the EQ for the normal channel.
  • Bass and Treble knobs do not change the sound. When turning the knobs for Bass or Treble, the Speaker LED blinks rapidly to indicate the knobs are inactive.
  • The Boost knob adds clean gain without added distortion. As you increase the boost level, midrange and treble increase slightly and bass decreases slightly, to prevent flubby or mushy distortion.
  • Vibrato sounds different depending on the Intensity knob setting, providing harmonic tremolo-type tones when set lower, and more aggressive volume tremolo when set high.
  • The Vibrato speed range on the pedal has an extended range so you can set it slower than the original amplifier.

Ruby '63 tone shortcuts

Set the Speaker and Channel switches in these positions for two classic amp and speaker cabinet pairings.

  • WORN BLUE + BRIL - Pairing used by the Beatles and U2.
  • SILVER + NORM - The classic Queen sound.

Factory and Artist presets offer many more great-sounding speaker cabinet and channel pairings. Use the UAFX Control mobile app to access presets.

 


 

Ruby '63 Specifications

Power requirements

(power supply sold separately)

Isolated 9VDC, center-negative, 400mA minimum

Inputs

2 x ¼” unbalanced TS (input 2 for stereo connections and 4-cable mode)

Outputs

2 x ¼” unbalanced TS (output 2 for stereo connections and 4-cable mode)

Input impedance

500 Kilohms (Mono In)

1 Megohms (Stereo In)

Output impedance

500 Ohms

Maximum input level

12.2 dBu

Maximum output level

12.1 dBu

Dynamic Range

115 dB (A-weighted)

Signal to noise ratio

-115 dB (A-weighted)

Frequency response

20 Hz to 20 kHz, ±3 dB

A/D and D/A conversion

24-bit, 44.1 kHz

USB Type-C

For registration and firmware updates via computer

Wireless technology

Transmitted Frequency Range

Maximum Output Power

Bluetooth v5

2.400 GHz – 2.4835 GHz

+4.35 dBm

Dimensions

(with knobs and protrusions)

Height: 2.56 inches, 6.5 cm

Width: 3.62 inches, 9.2 cm

Depth: 5.55 inches, 14.1 cm

Weight (unboxed)

1.24 lbs

0.567 kg

Note: All specifications are subject to change without notice.

 


 

Ruby '63 Safety

Caution: To help maintain the safety of your product, the chosen power supply must be a certified power supply complying with Limited Power Source (LPS) requirements with the following characteristics and electrical ratings: Isolated 9VDC, center-negative, 400 mA minimum, 2.1x5.5 mm barrel connector. Additional details at help.uaudio.com.

Before using this unit, be sure to carefully read the applicable items of these operating instructions and the safety suggestions. Afterwards, keep them handy for future reference. Take special care to follow the warnings indicated on the unit, as well as in the operating instructions.

  • Read the instructions.
  • Keep these instructions.
  • Heed all warnings.
  • Follow all instructions.
  • Do not use this apparatus near water.
  • Clean only with dry cloth.
  • Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
  • Do not install near any heat source such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
  • Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other.
  • Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
  • Only use with attachments/accessories specified by the manufacturer.
  • Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
  • Ruby '63 does not contain a fuse or any other user-replaceable parts.
  • A compliance marking label is provided on bottom of the unit.

United States Class B Manual Statement

NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by one or more of the following measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and the receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

Japanese Class B Manual Statement

この装置は、クラスB機器です。この装置は、住宅環境で使用することを目的としています

が、この装置がラジオやテレビジョン受信機に近接して使用されると、受信障害を引き起こ

すことがあります。取扱説明書に従って正しい取り扱いをして下さい。VCCI-B

This is Class B equipment. Although this equipment is intended for use in residential environments, it could cause poor reception if used near a radio television receiver. Please follow instructions in the instruction manual.

Korea KCC: 해당 무선설비는 전파혼신 가능성이 있으므로 인명안전과 관련된 서비스는 할 수 없습니다.

License exempt. This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes : (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.

Used electrical and electronic equipment should not be mixed with general household waste. Please dispose in accordance with local regulations.

  • IEC 62368-1
  • FCC ID: 2AXKQ2029
  • IC ID: 26610-2029

 

Hereby, Universal Audio, Inc. declares that the radio equipment type Bluetooth LE Device (Residential) is in compliance with Directive 2014/53/EU. The full text of the EU declaration of conformity is available at the following internet address: Signed EU Declaration of Conformity.pdf

 

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