Universal Audio OX Amp Top Box

Analog Loadbox

  • Analogue reactive loadbox for guitar tube amplifiers
  • Five tuned guitar amp attenuation levels
  • Rig control for pre-set microphone and loudspeaker emulations
  • UA Dynamic Speaker Modeling accurately models the behavior of a speaker and membrane resonances
  • Integrated UA EQ compression, delay and reverb effects
  • Ohm operation selectable (4, 8, and 16 ohms)
  • Connections: Line output 6.3 mm jack balanced
  • S / PDIF
  • Headphone output: 6.3 mm jack
  • Pairing via Wi-Fi with OX mobile or desktop app to edit and save presets (macOS, Sierra or High Sierra only)

Further information

Impedance 4, 8, 16
Noise Supression No
DI Interface Yes
Speaker Simulation Yes
Dummy Load (usable without cabinet) Yes

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4.7 / 5.0
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12 written ratings Read all reviews
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Very Impressive

PeteW, 16.05.2018
I've been using Suhr reactive loads and Spear IR's for a while now but easy portability of sounds between studios led me to look at the OX. the quality of the simulations is superb as you would expect. I was initially worried that I might not be able to get "my 1265 cab sound" as currently you cannot add custom IR's. However, I quickly found a '65 preset and nailed the tone/cab I'm used to hearing. Room eq, Mic's etc are all excellent and the quality of effects - especially the reverbs are superb and very usable. Very little tweaking needed.

My only disappointment is the inability to connect to the Ox via an iPhone app (although manual implies this is possible) - It can only be done via iPad app. I always carry a phone with me, but would rather not carry a pad around especially live. Also I don't run El Capitan and the current software cannot support this. El Capitan is not that old so I'm disappointed by that decision. Overall software is pretty good on the iPad - fairly easy to navigate and call up/store presets etc

Overall - Superb unit - pricey but worth the outlay.
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Total
features
sound
quality

The end of the amp microphone ...?

Ron H., 05.02.2018
OX is a Reactive Load Box that can simulate different tubes for the tube amp and then outputs them perfectly microfoned. You do not have to connect a Cabinet and so the amp for recording very nice s.Sweet Spot? drive, or you connect a box and adjust it by throttling to the location. The sound quality is great compared to similar loadboxes that I tested.

With their studio hardware and plug-ins, Universal Audio are pretty well placed in terms of quality, and accordingly the surround sound and the microphone simulation have been great. The box is very easy to use (few buttons, settings via the app) and in my view is the perfect complement to the favorite amp, both live and during recording. Looks nice too. The mixer gets a balanced stereo signal, you can record perfectly via digital output. The whole thing without any noise and mixed with 3 micros or DI, as you want it. There are 17 cabinets and 6 microphones, which can be arranged in 3 channels (2x direct, 1x surround sound). 2 Mics are dry without any room information, so in most situations you should add some space. When recording this can also be very difficult to recreate later. This is more about room reflections than reverb. It's important to note that the room, cabinets and old mics from UA were used and this determines the sound. So if you like to record in your own bathroom, you have to tweak a lot with the EQ and Raumhall or get involved in the other surround sound. And you should see the sound in comparison to a mirkrofonierten amp in the mixer room! Right in front of a full-stack, of course, the game's impression is different.

There are practicable presets as a starting point, some of which authentically reproduce album sounds (it is amazing how you can change the amp character with the recording room!). Even the "Speaker Drive" control is magical !!

Cabs and miking can be very meticulously adjusted and if necessary you can still EQ, nen 1176, delay or ne Hall plate drauflegen. Of course, all this goes on after the recording, the plugins are almost identical to the UAD2 (which is useful, for example, in the Hall plate). I'm totally thrilled and will probably never again put a micro in front of my box. At the gig you can rip open the amp, then throttle the box to a good monitoring volume and give the microfoned output to the mixer. The surround sound (3rd mic) can then be adjusted with the front control as needed / location.

Disadvantages: Currently no Celestion Vintage 30 to choose from (assume that it will be made available later in updates, as very popular, but there are also good alternatives). App only for OS-X and iPad, you probably work on other formats. The app is really great and very user-friendly. I am very curious how the platform will develop? with 3 USB ports and footswitch port hardware can also come something. Accordingly, I do not strip a star.

Expensive is the OX, but you should put this in relation: at least 3 good (R-121) microphones, preamps, perfect recording room, perfect Auslöschungsfreie microphone positions, amp turned up. At OX, this can be used and reconstructed at any time, even live.

It is nice that the box just fits great with a good tube amp and then makes it flexible and can be used without a box if necessary, without having to resort to Kemper & Co. Above all, playing on headphones is also a lot of fun, you can hear a lot of details from the amp and because of the useful operation you are not just turning the knob. OX, I believe, causes a lot of problems for many people. The sound quality leaves nothing to be desired? incredible.
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NOK 9,699 €1,018.49
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