OX Amp Top Box

OX Amp Top Box

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Customer Reviews

OX Amp Top Box

Overall Rating

21-40 of 49 Results

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D. Moore

March 4, 2018

Sounds GREAT, connection is terrible

The device sounds absolutely fantastic, but I spend a LOT more time trying to get the darn thing to connect than I do using it. The wifi just simply does not work as advertised.

Good sound. Terrible user experience.

J. Traynor

March 2, 2018

Ox earns a space on top of my amp.

I’ve gone from only using a real amp 6 years ago, to being impressed and loving IR tech, to being ecstatic about what UAD is doing with the Ox.

I’ve owned a Two Notes Torpedo CAB, eventually graduated to the LIVE. They are great loadboxes and using either the Two Notes software or 3rd party IRs from OwnHammer, I really didn’t think I could get a more satisfying studio/headphone experience, but I’ve always loved UAD and the Ox stylings spoke to me and more importantly, the sound lived up to the hype.

My experience with IRs was extremely positive, but the speaker modelling that UAD has put together has definitely won me over. I could always hear a weird sizzle at the end of notes using IRs, only really noticeable when playing clean and solo. Might be user error, but I’d like to think I know how to plug my amp in. I don’t hear that with the Ox, just nice clean trails to the notes played.

The software is on version 1.0 currently, so I think it’s too early to complain about not enough cabs, no bass cabs, lack of footswitching, etc. I have a feeling more features lie in wait. The app is well setup, but like any software, it has bugs. It’s extremely useable right out of the box, so no issues there. It will get more finely tuned with time and there will be more bells and whistles for us to lose our s. over.

My advice to potential buyers:
You will enjoy the Ox if you’re a UAD fan, if you’ve used UAD plug-ins getting one is a no brainer. The price is decent, right between a Two Notes LIVE and Studio, features-wise, I think it’s in the middle of those two machines as well.
You need an Ox or something like it to enjoy playing guitar for years to come, a real cab sounds great, but come on, this stuff is cool and you can crank your tube amp while babies are sleeping.

My requests/accessories recommendations to make it a better experience:
Some kind of rack ears might be nice. They’re going to be used in studios. Maybe someone out there can whip a design together.
A fitted carrying case like what usually comes with a lunchbox style head would be great for using the Ox at gigs. We’re going to start seeing them on stages. Venues should invest in them if they want to keep stage volume down.
Hopefully we get footswitch capabilities for the Master channel inserts/effects. Not sure what the 1/4” jack for the footswitch will bring to the table, but if it’s potential is limited, maybe some kind of Wifi enabled foot controller could be designed? 4 footswitchs and a tap tempo, wireless? Like hot cakes UAudio!

T. de Halleux

March 2, 2018

Sounds great, easy to use, perfectible

It sounds absolutely superb, the effects and notably the plate reverb are great, the user interface is simple, well designed and easy to use, most factory presets are usable and sounds great.

I've read all the others review and i'm ok with some criticism/request:

1 - WIFI could be more "sensitive", i use the OX at a place in my home where the WIFI is a little weak, and it's not always easy to connect the OX to it.
2 - More sample rates, like 48 and 96 KHz, will be more than welcome
3 - More cabinets and mics will be welcome too, but i'm quite sure that's not a problem and these are coming in future updates of the software.

Here are my three more personal requests to UA for a future OX Mk II

1 - An auxiliary inputs on 3,5mm jack to permit the use of an external source like a iPad or Mac while using the Headphone, the idea being to be able to practice on headphone with a metronome or a backing track.
These "aux" input can be found on most amp modeling platform, like LINE 6 HD500 POD and HELIX, or HEADRUSH and KEMPER, and i think it will be really useful on the OX also.

2 - XLR3 line outputs instead of 6,5mm jacks will be more professional.

3 - The possibility to use the OX as a sound card on a MAC with the USB interface.

As a summary i think this product is perfectible, like most products are, but is nevertheless a great piece of gear as it is now and i don't regret a second buying it, even if a little expensive, well done UA!

J. Davies

March 2, 2018

I love it so much, I hate it

I've spent 4 years cultivating a very respectable pedal board. I also bought a high quality combo tube amp so there would be no excuses as I chased tone and sound. I buy the OX and it's essentially rendered by pedal board obsolete. With the OX I can achieve sweet overdrive through the tube amp that doesn't blow up my hearing aid. The rig settings have built-in reverb, delay, compression and EQ. So the only pedals I use are my Strymon Mobius (for Chorus, Flanger, Phaser, etc) and a TC looper. But once UA gets around to offering UAD's that cover these effects, I can put my entire board up for sale on eBay/Reverb. The only comfort I take is that I couldn't have seen this coming... the OX is a new ground breaking product that's going to turn the world of effects on it's head. Thanks a lot? BTW - when can we expect the Chorus/Phaser/Looper effects to become available?

A. Kuehne

March 2, 2018

Marvellous Ox Amp Top Box

Thats what I'm searching for. Great tone with my own amps into the daw and always neighbor friendly. Thx UAD. Complete fantastic.

S. Osman

March 1, 2018

Its what I've wanted/needed for around 40 years !!

So it took some time, but finally, in 2018 I can now actually get a decent electric guitar sound at a sensible volume. Brilliant!

H. Engelke

February 28, 2018

Room for improvement

What I like:
The idea is great. It sounds good. It is easy to use and to set up.

What I don't like:
The Ox is missing bottom end.
A simulation of moving the mic further away from the cabinet I would appreciate a lot.
I hope there will be more cabinets and microphones later.
Personally miss my favourite microphone, the Sennheiser 906.
Wifi is weak, should at least have a the reach of an ordinary iMac, which it hasn't.
Digital output limited to 44100 does not impress me much.
Recording a “real” cabinet, in my case through Apollo 8p, analog in 1-2 and digital spdif are not in sync.
Spdif is late.

b. new

February 24, 2018

Like it, but just a couple of things...

Overall, I like this box. It works well and the cab emulations sound good and offer a reasonably wide range of choice. I do think there could have been more cabs on offer - and especially a couple of bass cabs. I would think that a lot of guitarists (like me) have a bass guitar knocking around and an 8x10 and a 1x15 bass cab would have been a very useful addition. I would have preferred a regular pot for the speaker volume knob. There is a spot where the volume goes from being just a little too quiet to just a little too loud and, because of the stepped output pot, I can’t get the volume just where I want it.
The other thing for me is the digital output sampling frequency being set at 44.1khz.
I can’t remember the last time I used 44.1 on a session and I don’t have a handy realtime sample rate converter. Seems an odd choice of sample rate. Even the cheapest USB interface can manage 48k…
But, despite those gripes, I do like it and am enjoying using it.

M. Wirth

February 24, 2018

Pros and cons

Ok, it´s a bit strange there´s no bass cab included, why? And the saving procedure is a bit unintuitive (you Think you are saving a new presets and suddenly the one you had is gone). But, and this is a big but, it really sounds fantastic! Nothing really comes Close to the nearness and feel. When I bought it the prize seemed a bit overprized, but now I can´t understand how they can sell it so cheap.

C. Doignie

February 23, 2018

YES! Looking for it for 30 years

Purchased a OX after trying it at NAMM - Fantastic!!!! Yes, it does it all: can for the first time use my amps at their best at home, during rehearsals and gigs (plugged in the console + cab at lower volume) ... and it does it extremely well + it enables to ensure the sound engineer is getting the sound you want and not a crappy place SM57... and on top switching between mics and cabs extend widely the sonic possibilities of my amps!!!!

- It would be great to be able to transfer some plug-ins (delays, reverb, compressor... ) purchased to it? For example it would be great to be able to add tape echo as an additional delay...
- Also using it live ... would be great to be able to control it from the pedalboard, to switch primarily effects or cabs/mics set-up... midi capabilities would be ideal (using a Gigrig G2...)
- iPad not always connecting fast

A. Bazinet

February 22, 2018

Simple. Easy. Awesome.

For me, modeling has always been a necessary evil. I used it because I had to, not because I liked it. I'd fire up something that purported to be a classic this or a perfect that, and they never were; always disappointing, always sounding wrong, never inspiring. Typically I'd then go to the forums, research things to try, then spend hours playing Dr. Scientist trying to coax a decent tone from it.

This is as far in the opposite direction as it's possible to be. You plug in; it sounds great. You try some different cabs; they sound great. You try the included effects; they sound insanely great. Throughout the whole process, it's absolutely simple and easy to use. Heck, they put a freakin' carpet under the cab when you hit the 'damp' button.

These people get me. I don't want to be Dr. Scientist; I want to play, and and want to be inspired to play. This thing delivers. I absolutely love it.

B. Prosko

February 22, 2018

Mind Blown

Was sold on it from the Shawn Tubbs video but got it just in time for a weeks with of sessions with Murray Pulver at the guitar helm...it was a game changer.

B. Chapman

February 18, 2018

Best thing ever. Period.

You need this now. See what your amp sounds like through multiple cabinets, with multiple close microphones, and room mics. All the while, not abusing reasonable decibel levels, or even dead quiet. Onboard EQ, 1176, Delay and Plate Reverb. What are you waiting for?

D. Jackson

February 15, 2018

Game Changer!!

I am not exaggerating when I say that I see no need to ever mic a guitar cabinet again. This is hands down the most useful and exciting piece of gear I have ever purchased!!!

S. Skinner

February 14, 2018

The Perfect Solution for Guitarists

This box has given me everything I have ever wanted from my gear. I can crank my tube amps all the way up and attenuate them down to normal listening volumes. I can practice silently at night and not bother anyone. I can record with beautifully crafted guitar tones using the UA speaker emulations and plugins through my actual amp and pedals. The software is elegantly designed and easy to use / navigate. The plugins included and room emulations are top notch as expected. I can take those professional sounding tone presets and save them to the Ox's rig selector dial and use them live for a perfect sound directly to the PA. And to top it off the box itself and packaging are absolute works of art, it looks beautifully vintage-y and substantial on top of my amp. I can't wait to see what features and functions they plan to add to it in future updates. Thank you Universal Audio for making this amazing piece of gear that I now cannot live without.

J. Gill

February 13, 2018

Finally, a professional powersoak and cab sim with room and effects unit

This is without doubt the best unit for creating finished sounding guitars direct into your recording system. Bring up the room sound for a gloriously "real" amp in the room sound, truly magnificent. Using the EQ and compression section I am able to get a great "finished" sounding guitar track as if it had been recorded on a console with all the expensive outboard stuff that is found in professional recording studios. It's just so easy to get a really good finished sound. "Finished" is the key for me. I hate messing around with reamping etc in order to find the tone I'm looking for. Reamping is a complete waste of time in my opinion. Getting the sound right before you hit record is the key to fast productive recording sessions and this really delivers. A bit expensive ?, well, maybe but it's worth it, at least it is to me. Highly recommended.

UAD User

February 10, 2018

Ox Review

I love it!! Does everything you advertised it to do. It means I can turn up my 100W Two-Rock amp and play it in the basement with a band or record late at night using my regular set up. The control over the sound with the different cabinets and microphone configurations, not to mention the UA effects is to die for. Thanks for making such a useful product!!!

S. Woolgar

February 9, 2018

Sounds fantastic!

I have two other reactive loads with recording emulation. This is nothing like those other two. Those other two are now for sale.

The iPad wifi setup was dead easy, and it works well. The Mac apps works well too.

Very happy.

J. Bennett

February 9, 2018


If you don't feel like reading the whole review, I'll save you the time, BUY IT.

I have always sworn that you can hear the "digital" in other cabinet emulators, even the expensive Torpedoes and Kempers. If you like that, great, I personally hate that digital aliasing weirdism junk that happens in their tones.

Along comes this thing. I'm a huge UA fan, and I believe that Universal Audio has the best analog emulations on the market, period. So naturally, when I heard they were putting this baby out, I was intrigued.

I work on a lot of metal stuff. So I was a little sketched out the entire time I was waiting for the preorder, because out of all of the videos I found on this thing, NONE of the guitar players were playing anything remotely metal, or even hard rock-type stuff. So I was definitely a little uneasy about it.

I got it before the app came out, apparently Sweetwater accidentally shipped a week early. I saw one of the default presets was a greenback 4x12. I've always preferred vintage 30's to greenbacks but I said what the hey and plugged my EVH 5150 III into it and took the line outs directly into our console.

You guys ever hear a piece of gear and your eyes just go wide and you get the "holy ****" feeling? This was one of those. This greenback 4x12 cab emulation sounded better than any cabinet I've heard in person to date. It was insane.

Then the app comes out. I messed around with the mics, EQ, reverb and delay, and I got some insane tones. The user interface is incredibly smooth and easy to use, a musician that isn't used to dialing in studio gear could use this thing no problem. I also think the build of the unit itself is just gorgeous.

The parameters are so cool, like you don't get the unlimited mic movement like you do the torpedo and some other emulators, but these are more than impulse responses, these are true emulations in the usual UA fashion that we've come to know and love, down to descriptions of exactly how the mics were placed in the room in relation to the cab.

Don't have your guitar player sit too close to it (within two feet), it will feed back a little, but that's very avoidable.

So that's about it. An easy-ish way to put it is, you know how you hear your amp go through your favorite cab, and it sounds amazing, so you mic it up and add some EQ here and there to capture that tone? This thing sounds pretty much exactly how I want my guitars to sound without having to mic a cab or process much of anything at all. And it goes without saying that this thing is great for reamping.

I honestly was a little disappointed at first when I found that there were no V30 emulations, and I still kind of hope that they come out with new emulations as time goes on, but at the same time I just don't care, this thing is a work of art. Buy it.

I have NOT tested this out as load box into a live cabinet, I've only used the balanced line outputs.

V. Kourkoutas

February 8, 2018


Universal audio nailed it once again! One of the best pieces of gear I have ever purchased. Both sides of the OX are pro level sounding, taking into account the real amp feel that we guitarists always seek. Having owned all similar products of this category, after buying the ox, they all sound plastic and artificial. It is a must have for every guitarist and every studio owner.

21-40 of 49 Results