Universal Audio Ruby '63 Top Boost Amplifier Pedal

Universal Audio

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Product Code: 3730
$399.00
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The Universal Audio Ruby '63 Top Boost Amplifier Pedal is a stereo amp and cabinet emulation pedal with vibrato, room modeling, multiple speakers, cabinets, and boosts, live and preset modes, and customization with the UAFX mobile app. 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 world-class UAD modeling, Ruby '63 delivers choirboy cleans, complex overdrive, and classic vibrato.

Deliver 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 UK 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.*

Take Your Tone to the Tailor
With built-in mic and speaker pairings from UA’s award-winning OX Amp Top Box, Ruby '63 lets you tailor your classic Brit amp tones like you took them to Savile Row.

2x12 Speaker Models

  • SILVER: Rare 15W Celestion Silver Bulldogs
  • BLUE: Original Celestion Blue Bulldogs
  • GREEN: Modern Celestion G12Hs

Free Additional Speaker Cabinet Models (with the UAFX Control app)

  • 1x12 AC15 cab with Blue Bulldog
  • 2x12 Matchless cab with Celestion G12Hs
  • 2x12 Two-Rock cab with Celestion Golds

Customize your Sound with the UAFX App
Ruby '63 really gets cracking with the UAFX Control mobile app. Download custom artist tones, recall and archive your presets, and dive deeper into the amp that ignited the British Invasion.

Universal Audio Ruby '63 Top Boost Amplifier Pedal 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

Universal Audio Ruby '63 Top Boost Amplifier Pedal Features Specifications

  • Power requirements: Isolated 9VDC, center-negative, 400 mA minimum (sold separately)
  • Inputs: 2 x ¼” TS (right input for stereo connections and 4-cable mode)
  • Outputs: 2 x ¼” TS (right output for stereo connections and 4-cable mode)
  • USB Type-C for updates via computer
  • Height: 2.56” (6.5 cm)
  • Width: 3.62” (9.2 cm)
  • Depth: 5.55” (14.1 cm)
  • Weight: 1.24 lbs (0.567 kg)

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What We Think

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For me the Ruby is the clean tone and foundation tone pedal. It is the "most amp" pedal of the bunch. Maybe because I personally use a British amp as the core of my personal tone, but this pedal has a body that is smile inducing. The cleans can be rich and warm, to bodied and brilliant. Then get a slightly gritty tone from it as a foundation and push the pedal with another pedal (whether that be your favorite rodent, tube screamer, or the Universal Audio Dream pedal). The Ruby is quite flexible. This one as my kind of magic to it.

Ryan Ferris, Pro Audio Sales

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