Universal Audio OX Amp Top Box

£1,399.00 Out of Stock

RRP £1,704.00 Save £305.00


Out of Stock

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Includes 30-Day Exchange & 3-Year Warranty

Buy with confidence: We're the 1st, and only, UK guitar retailer to offer a 3-year warranty & 30-day exchange as standard.

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Total Price: £

Manufacturer's ID: OX

Founded in 1958 by Bill Putnam Sr., Universal Audio has been synonymous with innovative recording products since its inception. A favorite engineer of Frank Sinatra, Nat King Cole, Ray Charles and more, the late Bill Putnam Sr. was a passionate innovator who is widely regarded as the father of modern recording — with many of his legendary studio and equipment designs still in use today.

  • Play and record your tube amp in it's perfect tonal sweet spot - anywhere, and at any volume.
  • Pair your amp to the world's best reactive load, with boutique UA analog quality - built for years of home and studio use
  • Instantly audition dozens of album quality mic and guitar cabinet emulations with front panel "Rig" control
  • Get authentic "Edge of destruction" tones complete with speaker breakup and cone cry, via UA Dynamic Speaker Modeling


  • Premium, no-compromise analog reactive load box for tube guitar amps
  • Five finely-tuned guitar amp attenuation levels
  • Front-panel “Rig” control for instant, album-quality mic and speaker cabinet emulations
  • UA Dynamic Speaker Modeling emulates speaker breakup and cone cry
  • World-class Universal Audio EQ, compression, delay, and reverb effects built-in
  • Selectable 4, 8, and 16-ohm operation
  • Front-panel Headphone out for silent practice with cranked tones
  • Balanced TRS line outs, and S/PDIF digital outs for recording
  • Pair with OX mobile or desktop app over Wi-Fi for editing and saving presets

Customer reviews

Overall Rating 5/5 (8 reviews)

Daniel C. - 6/8/2022

Chris B. - 22/2/2022

Richard G. - 17/3/2021

David E. - 18/2/2021

I couldn?t be happier. Am so glad I bought this and would recommend it to anyone who has spent a lot of money on amps to get the most out of them. Is definitely with the money. Check out some demos on YouTube if you?re unsure.

Owen J. - 2/2/2021

Laurie K. - 12/3/2019

Easy to use and ideal amp taming box - I was thinking about an amp attenuator, but the extra features (Headphones , recording etc.) with an easy to save / store interface and lots of cabinet/mike options, made this the obvious choice. It's solid and looks indestructible too!

Roger C. - 19/3/2018

21st century product. UAD quality all the way

John S. - 18/2/2018

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