Plug your guitar into the Ruby '63 and choose from numerous legendary mic/speaker pairings, boosts, and amp models, including popular hot-rod options, with more available for download. Featuring built-in mic and speaker pairings derived from the OX Amp Top Box, everything from mellow chimes to complex overdrive can easily be attained, while classic tube-driven vibrato and tremolo effects can unleash a universe of sonic possibilities. Whether you are looking to get out in front of your amp or simply add some quintessentially British tonal flavor to your guitar sound, the Ruby '63 amplifier pedal delivers expressive album-ready studio tones at the flip of a switch.

Powerful UAFX Dual Engine
The Ruby '63 features dual-engine processing combined with UAD audio-modeling expertise for an extremely authentic emulation of the classic '60s British tube amp sound. Cabinet/mic emulations can be bypassed for simply adding overdrive or tonal flavor to your sounds. With treble booster, preamp boost, and speaker swaps, the Ruby '63 is equipped to produce album-ready tones with the flip of a switch.
World-Class Amp Modeling
Drawing from the custom mic and speaker pairings of UAD's award-winning OX Amp Top Box, the Ruby '63 provides immediate access to inspiring studio tones. Six unique modeled speaker/mic combos are available to either take on the go or spice up your DAW recording, providing a huge range of sounds.
Legendary British Boost Circuits
The Ruby '63 features three different types of modeled boost circuits arranged as channels, each with their own distinct voice. The Brilliant channel, based on a '63 top-boost amplifier, adds extra tube for more gain and treble. The Normal channel, based on a '61 non-top-boost amplifier, features more headroom and lower overall gain than Brilliant and works well with other pedals. The Vibrato channel is based on a '63 top-boost amplifier and features its own unique sound and set of inputs. Vibrato can produce tremolo-type tones and attain even slower rates than the original amp.
Hot-Rod Classic Boosts
The Ruby '63 features two classic boosts, right onboard. This includes the '60's Dallas Rangemaster germanium treble preamp booster (linked to the Brilliant channel), and the preamp section of a '70s Maestro EP-3 tape delay (linked to the Normal channel). Just flip the Boost switch to achieve searing guitar tones.
UAFX Mobile App
Want to just control all of the Ruby '63 features without having to bend over and adjust knobs? UAD has you covered with a handy Bluetooth pairing function that allows you to alter any available parameter directly from your favorite mobile device through the UAFX Mobile app. Customize features, explore presets, or even download new tones, models, and artist presets all with a few taps. You can even get deep and customize your footswitches for a wide array of functions.
Flexible Controls
With two footswitches, six knobs, and three flip switches, the Ruby '63 contains a bevy of control for those who want maximum sonic flexibility. Input gain, output gain, high-frequency cut, bass response, treble response, and boost amount all get dedicated rotary knobs, so any amp sound can be quickly dialed in. Speaker type, amp storage, and channel type all get three-position switches for extra flexibility. The dual footswitches default to on/off and preset switching, while further footswitch modes are available with the UAFX Control app.
Sophisticated I/O
The Ruby '63 provides users with an elegant and efficient I/O arrangement to enable plenty of options right out of the box. One mono input and one mono output are provided for basic use, while a secondary input and output are also provided for stereo linking. A multitude of connection combinations are possible, from sending stereo outs to an interface or stage PA, to sending separate outs to different amps and effects loops—even more options are unlocked when using multiple Ruby '63 pedals in tandem. The 4-Cable mode, compatible only with UAFX amp pedals, allows the addition of another switchable channel to any real guitar amplifier with an effects loop, allowing you to switch between your guitar amp's built-in preamp section and the sounds in your pedals.
Built to Last
Featuring the timeless design and rugged craftmanship that UA has become known for, the Ruby '63 pedal is built to last decades. Whether taken on the road or used in the studio, this pedal can be relied upon to deliver quality sound on demand.

Inputs / Outputs
USB I/O 1 x USB Type-C Female Input
Audio I/O 2 x 1/4" TS Hi-Z/Instrument Input (Input 2 for Stereo)
2 x 1/4" TS Hi-Z/Instrument Output (Output 2 for Stereo)
Input Impedance Mono In: 500 Kilohms
Stereo In: 1 Megohms
Output Impedance 500 Ohms
Maximum Input 12.2 dBu
Maximum Output 12.1 dBu
Signal to Noise Ratio -115 dB (A-weighted)
Frequency Response ± 3dB 20 Hz to 20 kHz
AD/DA Conversion 24-bit, 44.1 kHz
Wireless
Bluetooth 5.0
Bluetooth Frequency 2.400 GHz to 2.4835 GHz
Power
Power Source AC Adapter with Power Brick (Not Included)
DC Input Power 9 VDC at 0.4 A
Environmental
Certifications CISPR 22 - Class B, IC, Kcc, as per Manufacturer
Physical
Color Silver
Dimensions 5.55 x 3.62 x 2.56" / 14.1 x 9.19 x 6.5 cm (With Knobs and Protrusions)
Weight 1.24 lb / 0.56 kg
Packaging Info
Package Weight 1.77 lb
Box Dimensions (LxWxH) 7.1 x 4.9 x 3.1"