Universal Audio UAFX Ruby '63 Top Boost Amplifier Pedal
The UAFX Ruby '63 Top Boost Amplifier pedal captures the legendary British valve amp sound that has defined rock music for over six decades, from Queen's stadium anthems to U2's atmospheric soundscapes and Radiohead's innovative textures. This powerful stompbox harnesses UAD's renowned modelling expertise and dual-engine processing to recreate the choirboy cleans, complex overdrive, and classic vibrato that made the original amp a studio and stage favourite. Ruby '63 stands apart as the only pedal offering all three channels from the original amplifier - Normal, Brilliant, and Vibrato - allowing musicians to access the full tonal spectrum with a simple switch flip. The pedal excels both as a complete amp replacement for direct-to-FOH performances and as a recording solution, providing album-ready tones that sound like an expertly miked vintage tube combo straight out of the box. Built-in classic boosts include the legendary '60s Dallas Rangemaster germanium treble booster and the preamp circuit from a '70s Maestro EP-3 tape delay, accessible via the onboard Boost switch for those searing layered tones that cut through any mix. The UAFX Control mobile app expands the pedal's capabilities further, offering custom artist presets, preset management, and deeper exploration of the amp that sparked the British Invasion. Technical specifications include dual 1/4" inputs and outputs supporting stereo and 4-cable mode operation, 24-bit/44.1kHz conversion, 115dB dynamic range, and Bluetooth connectivity. The pedal requires 9VDC centre-negative power at 400mA minimum and features USB Type-C for registration and firmware updates.
The UAFX Ruby '63 Top Boost Amplifier pedal captures the legendary British valve amp sound that has defined rock music for over six decades, from Queen's stadium anthems to U2's atmospheric soundscapes and Radiohead's innovative textures. This powerful stompbox harnesses UAD's renowned modelling expertise and dual-engine processing to recreate the choirboy cleans, complex overdrive, and classic vibrato that made the original amp a studio and stage favourite. Ruby '63 stands apart as the only pedal offering all three channels from the original amplifier - Normal, Brilliant, and Vibrato - allowing musicians to access the full tonal spectrum with a simple switch flip. The pedal excels both as a complete amp replacement for direct-to-FOH performances and as a recording solution, providing album-ready tones that sound like an expertly miked vintage tube combo straight out of the box. Built-in classic boosts include the legendary '60s Dallas Rangemaster germanium treble booster and the preamp circuit from a '70s Maestro EP-3 tape delay, accessible via the onboard Boost switch for those searing layered tones that cut through any mix. The UAFX Control mobile app expands the pedal's capabilities further, offering custom artist presets, preset management, and deeper exploration of the amp that sparked the British Invasion. Technical specifications include dual 1/4" inputs and outputs supporting stereo and 4-cable mode operation, 24-bit/44.1kHz conversion, 115dB dynamic range, and Bluetooth connectivity. The pedal requires 9VDC centre-negative power at 400mA minimum and features USB Type-C for registration and firmware updates.
The UAFX Ruby '63 Top Boost Amplifier pedal captures the legendary British valve amp sound that has defined rock music for over six decades, from Queen's stadium anthems to U2's atmospheric soundscapes and Radiohead's innovative textures. This powerful stompbox harnesses UAD's renowned modelling expertise and dual-engine processing to recreate the choirboy cleans, complex overdrive, and classic vibrato that made the original amp a studio and stage favourite. Ruby '63 stands apart as the only pedal offering all three channels from the original amplifier - Normal, Brilliant, and Vibrato - allowing musicians to access the full tonal spectrum with a simple switch flip. The pedal excels both as a complete amp replacement for direct-to-FOH performances and as a recording solution, providing album-ready tones that sound like an expertly miked vintage tube combo straight out of the box. Built-in classic boosts include the legendary '60s Dallas Rangemaster germanium treble booster and the preamp circuit from a '70s Maestro EP-3 tape delay, accessible via the onboard Boost switch for those searing layered tones that cut through any mix. The UAFX Control mobile app expands the pedal's capabilities further, offering custom artist presets, preset management, and deeper exploration of the amp that sparked the British Invasion. Technical specifications include dual 1/4" inputs and outputs supporting stereo and 4-cable mode operation, 24-bit/44.1kHz conversion, 115dB dynamic range, and Bluetooth connectivity. The pedal requires 9VDC centre-negative power at 400mA minimum and features USB Type-C for registration and firmware updates.
The UAFX Ruby '63 Top Boost Amplifier pedal captures the legendary British valve amp sound that has defined rock music for over six decades, from Queen's stadium anthems to U2's atmospheric soundscapes and Radiohead's innovative textures. This powerful stompbox harnesses UAD's renowned modelling expertise and dual-engine processing to recreate the choirboy cleans, complex overdrive, and classic vibrato that made the original amp a studio and stage favourite. Ruby '63 stands apart as the only pedal offering all three channels from the original amplifier - Normal, Brilliant, and Vibrato - allowing musicians to access the full tonal spectrum with a simple switch flip. The pedal excels both as a complete amp replacement for direct-to-FOH performances and as a recording solution, providing album-ready tones that sound like an expertly miked vintage tube combo straight out of the box. Built-in classic boosts include the legendary '60s Dallas Rangemaster germanium treble booster and the preamp circuit from a '70s Maestro EP-3 tape delay, accessible via the onboard Boost switch for those searing layered tones that cut through any mix. The UAFX Control mobile app expands the pedal's capabilities further, offering custom artist presets, preset management, and deeper exploration of the amp that sparked the British Invasion. Technical specifications include dual 1/4" inputs and outputs supporting stereo and 4-cable mode operation, 24-bit/44.1kHz conversion, 115dB dynamic range, and Bluetooth connectivity. The pedal requires 9VDC centre-negative power at 400mA minimum and features USB Type-C for registration and firmware updates.
in 24 offers
The lowest price for Universal Audio UAFX Ruby '63 Top Boost Amplifier Pedal right now is $375.00 at Cool Old Guitars, compared across 18 retailers.
The all-time low was $300.39 on 13 Feb 2026 — today's price is 25% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 23 July 2026.
Last updated at 23/07/2026 15:01:12
Universal Audio UAFX Ruby '63 Top Boost Amplifier
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Universal Audio Ruby '63 Top Boost Amplifier
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Universal Audio Ruby '63 Top Boost Amp Pedal (22472049005955) - Preloved
Delivery between 24 July – 7 Aug $57.29
Universal Audio UAFX Ruby '63 Top Boost Amplifier Guitar Effects Pedal
Delivery between 24 July – 7 Aug $57.29
Universal Audio Ruby '63 Top Boost Amplifier Pedal
Delivery $16
Universal Audio [Summer Bonus Sale] [Special Price Promotion] UAFX Ruby '63 Top Boost Amplifier (Universal Audio) Preamp
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Universal Audio Uafx Ruby '63 Top Boost Amplifier Pedal
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originally posted on rockshop.co.nz
Brilliant emulation of Vox AC 30. The speaker simulation and Rangemaster boost are amazing. An education into the history of guitar. Sounds better than my AC15 and it sounds great! Using it live and in the studio.
originally posted on moogaudio.com
the UA pedals are simply amazing!! right now the Ruby is blowing me away !!
originally posted on gak.co.uk
Perfect. Never played a amp pedal, quite like this before. My main amp may just become my backup rig. 5 stars. Excellent gear.
| Finish | Ruby / Silver |
| Year | 2022 - Present |
| Made In | United States |
| Pedal Format | Standard |
| SILVER | Rare 15W Celestion Silver Bulldogs |
Universal Audio UAFX Ruby '63 Top Boost Amplifier
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Universal Audio Ruby '63 Top Boost Amplifier
Free delivery
Universal Audio Ruby '63 Top Boost Amp Pedal (22472049005955) - Preloved
Delivery between 24 July – 7 Aug $57.29
Universal Audio UAFX Ruby '63 Top Boost Amplifier Guitar Effects Pedal
Delivery between 24 July – 7 Aug $57.29
Universal Audio Ruby '63 Top Boost Amplifier Pedal
Delivery $16
Brilliant emulation of Vox AC 30. The speaker simulation and Rangemaster boost are amazing. An education into the history of guitar. Sounds better than my AC15 and it sounds great! Using it live and in the studio.
the UA pedals are simply amazing!! right now the Ruby is blowing me away !!
Perfect. Never played a amp pedal, quite like this before. My main amp may just become my backup rig. 5 stars. Excellent gear.
Universal Audio is known for their expert ability to digitally emulate analog gear, and the UAFX Ruby '63 is no exception, What makes it special is how scary accurate this sounds and feels like a VOX AC30 when plugged in direct. You have to play it to believe it.So, do yourself a favor and pick up a UAFX Ruby '63.
Yes, it's all there! U2/edge, chime me Celtic delay, riffs,, Brian, May and Rory, Gallagher, singing, crunch, shiny, clean, pick lines from The Beatles, REM, Tom Petty, the only thing I haven't tried is old Yardbirds style stuff. A lot of fun, very amp like and realistic.
most authentic Vox modeller ihave heard and I have had Helix, Fractal and Boss
Easy and intuitive interface means quick access to the important stuff- tone! It's everything I hoped for. Sparkle, chime and shimmer to that thrilling, throaty roar with just a twist of the guitar's volume knob.
This pedal is a game changer in my opinion. I actually have a 1960 VOX AC10 and I can honestly say the Ruby '63 is such an accurate modeller that it's hard to tell them apart sound wise. It even 'feels' right under the fingers! Super versatile in the ways it can be configured, the only thing I would say is that there is a lot to go through in all the various manuals and not everything is easily downloadable from the UA website. This isn't a problem if you're ok with getting the info you need 'on-screen' and saves paper I suppose, but this is just my observation and it doesn't detract from what is a fantastic piece of kit that delivers what it sets out to and is built like a tank! This gives me the sound and feel of my old AC10 (and much more) in a 'silent recording' ... MoreThis pedal is a game changer in my opinion. I actually have a 1960 VOX AC10 and I can honestly say the Ruby '63 is such an accurate modeller that it's hard to tell them apart sound wise. It even 'feels' right under the fingers! Super versatile in the ways it can be configured, the only thing I would say is that there is a lot to go through in all the various manuals and not everything is easily downloadable from the UA website. This isn't a problem if you're ok with getting the info you need 'on-screen' and saves paper I suppose, but this is just my observation and it doesn't detract from what is a fantastic piece of kit that delivers what it sets out to and is built like a tank! This gives me the sound and feel of my old AC10 (and much more) in a 'silent recording' set-up and that is exactly what I wanted. Highly recommended, especially at the sale price I paid! Thanks again Andertons!
I can’t really rate it because it hasn’t arrived yet due to the crap courier GLS that you use, they eventually will ruin your business if you don’t get rid of them, sorry for the rant but it’s been a month now with no response kick them to the Curb.
| Finish | Ruby / Silver |
| Year | 2022 - Present |
| Made In | United States |
| Pedal Format | Standard |
| SILVER | Rare 15W Celestion Silver Bulldogs |
