Ruby '63 Top Boost Amplifier
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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.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
TAKE A LISTEN
Hear UAFX vs. Vintage Amps
Watch Rhett Shull, Tim Pierce, and Mateus Asato put UAFX Amp Emulators to the ultimate test.
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.
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.
“Just like the real vintage amps, I can crank UAFX Amp Emulators for drive, and use my guitar's volume control for sparkling, three-dimensional clean tones. I put all three on my studio board!”
– David Ryan Harris (John Mayer, Dave Matthews, Santana)
“UAFX Amp Emulator pedals have become a staple in my studio. Each one is stacked with brilliant sonics that keep me inspired.”
– Tyler Bryant (Tyler Bryant & the Shakedown)
“The UAFX Amp Emulator pedals are so expressive, it's unreal. They give me more tones than I could ever need, and the app lets me easily recall my presets — all in a perfectly sized stompbox.”
– Justus West (John Legend, Alicia Keys, Ty Dolla $ign)
“The new UAFX Amp Emulator pedals are remarkably faithful to the iconic amplifiers they model, letting me easily add vintage Fender and Vox tones to any session.”
– Tim Pierce (Michael Jackson, Bruce Springsteen)
“The rich sound quality of UAFX pedals inspire you to play guitar.”
– Chris Traynor (Bush, Helmet)
“UAFX pedals sound amazing. They're instant inspiration with the right amount of tweakability.”
– Lyle Workman (Beck, Sting)
“I have a lot of old pedals. UAFX pedals give me all those classic sounds, without the hassles.”
– Dave Cobb (Rival Sons, Chris Stapleton, Sturgill Simpson)
“UAFX pedals have truly recreated classic analog effects of the past, and made them better.”
– Butch Walker (Green Day, Weezer, Taylor Swift)Note that Ruby '63 Top Boost Amplifier requires a modern 400 mA isolated power supply (sold separately). Go here for power supply recommendations.
* 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.Customer Reviews
M. Caporizzo
July 25, 2022
Incredible Sound and Feel
The sound this pedal delivers is truly extraordinary. I have never before played a digital simulation with such an authentic feel, especially for the slightly broken up tones. The 4-cable...
Read MoreB. Lepsch
July 20, 2022
The hunt for my everyday guitar sound is over
I tried countless option over the years to get the feel of a real valve amp using various gears. I had great result using stomp boxes and emulators but never had the...
Read MoreG. Cohen
July 13, 2022
Great sound, lacking switching flexibility
Love the sound on this!! I just wish it was more flexible with routing. Bring on the Marshall/Bassman, Hiwatt, and Orange!!!
Read MoreJ. Holloway
July 8, 2022
Stunning
UAD has really smacked the ball out of the park with these pedals. I liked the Woodrow so much that I bought the Ruby and absolutely love it. Totally nails the Vox chime and sweetness; the...
Read Morec. calero
July 4, 2022
AC30 Top Boost real en formato pedal
Impresionado es poco, nada más ver la caja se nota que es un producto premium, algo que es usual viniendo de Universal Audio. Construccion muy robusta y bonita, es un pedal precioso. En...
Read MoreD. Kovaios
July 1, 2022
Amp modelling at its best!!!
I've used it at a couple of different applications, since I purchased it yesterday, and it has proved that it's worth every cent! Sure, it is limited, it does not offer multiple micing...
Read More -
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
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Customer Reviews
Ruby '63 Top Boost Amplifier
M. Caporizzo
Incredible Sound and Feel
The sound this pedal delivers is truly extraordinary. I have never before played a digital simulation with such an authentic feel, especially for the slightly broken up tones. The 4-cable mode is especially handy – a very clever feature that is getting a lot more use with my live rig than I expected it would. Bravo, UA!
B. Lepsch
The hunt for my everyday guitar sound is over
I tried countless option over the years to get the feel of a real valve amp using various gears. I had great result using stomp boxes and emulators but never had the feeling of my good old British valve amp with mics...until this Ruby came at the studio.
No more cables and mic needed to get a great sound and feeling.
Plug your guitar in the Ruby with a bunch of good drive and effects ( or not) close your eyes and your in !
Fantastic sound, responsive knobs, where did you guys at UA put the valves in this thing !?
Thank you so much, I m ready for years now !G. Cohen
Great sound, lacking switching flexibility
Love the sound on this!! I just wish it was more flexible with routing. Bring on the Marshall/Bassman, Hiwatt, and Orange!!!
J. Holloway
Stunning
UAD has really smacked the ball out of the park with these pedals. I liked the Woodrow so much that I bought the Ruby and absolutely love it. Totally nails the Vox chime and sweetness; the tremolo is warm and lush. I'm running them through the clean channel of a Friedman Run and JJ Jr, and they really impart an incredible sonic palette. It's quite seriously like adding two new amplifiers to the rig. The one thing I'd like is the ability to cycle through presets without having to open the UADFX application (which works well, but could be a challenge in a performance context.) Well done, UAD! I may have to buy the Dream too...
c. calero
AC30 Top Boost real en formato pedal
Impresionado es poco, nada más ver la caja se nota que es un producto premium, algo que es usual viniendo de Universal Audio. Construccion muy robusta y bonita, es un pedal precioso. En cuanto a sonido es una emulación de la más alta calidad de un Vox AC30 Top Boost de los años 60, con sus canales normal, brillante y vibrato.
La recreación del mismo es exquisita y además trae emulados varios boosters de la época entre ellos el Dallas Rangemaster (muy conocido por usarlo brian may de Queen).
Las emulaciones de pantalla/altavoz es lo mejor que he escuchado nunca ya que no va por IRS sino por la propia tecnología de Universal Audio que emula el comportamiento del altavoz y membrana, recrea fielmente el aire que mueve un altavoz en vivo, todo esto proviene de su famoso OX amp top box.D. Kovaios
Amp modelling at its best!!!
I've used it at a couple of different applications, since I purchased it yesterday, and it has proved that it's worth every cent!
Sure, it is limited, it does not offer multiple micing techniques, MIDI control and all that stuff...but, it offers such a great amp feel in picking technique, break-up tones, transition from clean to overdrive, amp and (included) boost unit interaction and working with other pedals, such as demanding fuzzes.
In all honesty, and this is a personal choice, all that people say against these tools don't apply to my needs. I need one, to replace a big, heavy, loud thing called guitar amplifier, with something manageable volume-wise (which, for most of my applications, means silent) that when connected to a studio, or live PA system feels like an amp to me, so that I can focus on the guitar, playing dynamics, use of guitar volume/tone controls.
I 've used many units, including completely digital, amp through IRs, amp and/or cab pedal platform units, and this thing offers the greatest experience!
I've also enjoyed the Woodrow unit, and was interested in getting that one at first, but actually using them both made me understand that I am not that much of Tweed guy.
Great units, well done, people of UA!!!W. Taylor
Not as advertised...sending it back
Great LOOKING pedal..too bad it doesn't work...New out of the box, will NOT pair with the UAFX Control app on my Mac desktop and it will NOT pair via bluetooth to the UAFX control app on my phone. I have a Starlight Echo station I bought last year and it worked and paired fine. I usually expect this sort of thing when I buy cheap..but to buy a $400 pedal and it won't even do the BASIC FIRST THING IT'S SUPPOSED TO DO...well, that's a LOT frustrating...Now I have to re-box it, print label, take time out of my day to ship it back etc...just disappointing UA...I was excited about this pedal...big meh now...
Z. Saucier
I absoluitely love it
I recently acquired a ruby and it really does remind me of when I used to run an amp!
I am blown away by the realism. I do wish I had more visibility on and the ability to choose a different cab each side and maybe even blend the same amp but the different channels left and right but otherwise without any extra editing this thing is a beast still.J. Kiedrowski
Really Good, Could be great
Firstly, the sounds are really cool. Other people have said it, but this by far the most "amp like" modeler. I've tried them all, but I'm coming from a square black box modeler that gave me three options and full midi control. I really took advantage of the midi in that box and loved being able to use midi switching to turn the drive knob up and down. I wish all of the UAFX pedals had midi and I do think it's a mistake. But since I think it's impossible for them to add that functionality later, I'll concentrate on what could actually be improved while letting UA stick to their no midi philosophy.
1) Add a way to change which microphone is used on which speaker (I know it's possible - artist presets show it is). I like the speaker choices, but sometimes I'd like a different microphone on that speaker.
2)Add a way to make basic eq changes. - A high pass and low pass filter would get us 90% of the way (again eq changes are there in the artist presets, I know it's possible).
3. Please let me use the tremolo on the brilliant channel. I know why you just wanted the amps to be as they are and be faithful to the specifics, but I could replace the trem pedal on my board if I could use ruby's tremolo with the brilliant channel.
So yes, I'd love full midi implementation, I understand that will not happen. But these three changes would make this that best amp modeler on the market even without midi and all of these are possible and dare I say - easy - to implement from a software perspective. The only reason I'm even writing this is because I think that UA listens to its customers. I really like the Ruby. I want to keep it. I sincerely hope there is more development on it coming. Thanks for making a really great sounding amp.T. Broadley
Amazing in every way!
I followed the release of this unit and was intrigued, so I decided to visit my local store-and milliseconds after plugging in, knew this was VERY different than any simulation previously available. After 35 years of owning some of the finest vintage gear-along with a strong desire to modernize my recoding set up; I can say this little pedal has made more of an impact than I could have imagined. The VX sounds are all there-and the adjustability is far better than owning 3 different AC-30’s. However, the real magic is in the feel. Many products had touted “real amp-like” feel over the years, but it my experience-the Ruby delivers better than anything else. Real goosebumps. Since purchasing 2 weeks ago, I’ve logged more hours playing the Ruby than anything else I own. Thank You to the UA Team! Now, please come out with a Pedal that emulates the “other” British amp company:)
