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Customer Reviews

OX Amp Top Box

Overall Rating

121-140 of 223 Results

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b. janzen

May 7, 2021

firmware? more like nowhere

Hope you saved your flashdrives from 2005 cause this sonnabitch can't be updated unless your flash drive is less than 2GB!
Currently digging up grandmas grave to grab her last flash drive so I can try to make this work in 2021.

b. janzen

May 7, 2021

firmware? more like nowhere

Hope you saved your flashdrives from 2005 cause this sonnabitch can't be updated unless your flash drive is less than 2GB!
Currently digging up grandmas grave to grab her last flash drive so I can try to make this work in 2021.

b. janzen

May 7, 2021

ox box sux

more like sux box ammirite

A. Barker

April 13, 2021

Best tool for Home Studio guitar tone!

I’ve had all the other speaker sim reactive load boxes... and to me the OX sounds and feels at least twice as better when I compared my then current favorite loadbox. I spend much more time grooving good tones than tweaking also, but even when tweaking Ox, it’s a fun tweak.

R. Park

April 13, 2021

Two years in, and it's still the magic box for guitar!

By way of full disclosure, I originally intended to order the Ox just to see what all the talk was about, play with it, and send it back. No way was I keeping a $1300 glorified direct box. It arrived in impressive packaging, very well protected for the trip. Call me shallow if you'd like, but packaging is the first clue to quality. You can tell if THEY think something is important in the box by what sort of box they put it in. Good start.

I connected it to a few amps that I have never been able to run in their sweet spot live: a Carol Ann Tucana 3 and a PRS HX/DA, each directly into a 2x12 cabinet. Turning the attenuation down and the amp up, I was impressed to note that the sound wasn't compressed and lifeless, as many attenuators tend to do when pushed hard. I wish there were twice as many attenuation points, but what is there is serviceable in the real world. It has since been tested on a variety of other amps: a black face Deluxe Reverb, a vintage AC30TB, and on every amp, the result is the same... set it where it sounds good, control it with the OX, done. Test #1: Success!

I downloaded the app to my iMac/DAW, followed the quick start connection guide and I was up and running in short order. As an aside, I totally do not get the comments on connection difficulty... following the instructions, it was a snap. The app is good, and has a lot of control. Getting around and assigning rigs is a bit tedious, but that's likely more my unfamiliarity than the app... most of the time I just use the box. Graphics are useful, and needless to say for UA, the effects are gorgeous and incredibly well implemented. The ability to add room mics really opens the sound and produces that "good studio" vibe into your sound. Test #2: Success!

Then I put the two together, and was shocked at how good it can sound mixed. With a direct tone coming from the cab and an effected tone coming from the monitors, the sound is immersive. It gives you that great live guitar tone from the comfort of your favorite studio chair. This was not something I had really purchased the Ox to do, but it immediately became my favorite sound combination. (Unanticipated) Test #3: Smashing Success!

So, I guess you could say the test drive very positive 3 for 3 sweep, and I would be happy to have found out what I wanted before sending it back. Well, that was two years ago, and the OX is still with me in regular use! Far from the fancy direct box I thought it was, the Ox Amp Top Box is an instrument unto itself, and you just need to open your mind to what it can be used for to see many possibilities beyond the obvious. I could take away stars for things I would like to see there, but this review is about what IS there, and that justifies the 5 Star rating. It is the best I have found for a guitar amp interface/attenuator/effector/expander/etc. It has become as much a part of the setup as anything else, and if you look around on YouTube, you'll find I'm not the only one who always has the orange Ox power light glowing in the background.

I paid the money and didn't return it... there's no better score I can give it than that.

t. edwards

December 8, 2020

Awesome for recording

I had to wait until the firmware supported Windows, but have never had connection issues. So much different (better) than other load boxes I've used, and IR's are outstanding. Add in the "mic locker" , ability to add in room mics and effects, EQ and compression, all in one ap, and it's a game-changer. I have the space and the mics to mic-up cabs, but haven't done that since I got this box.

H. Schmidt

December 2, 2020

Tolle Hardware, sehr schlechte software unter Windows

Ein sehr schönes Teil, welches meinen Bogner Atma Amp im Wohnzimmer nutzbar macht. Leider ist es mir bis heute nicht gelungen, die App unter Windows zum laufen zu bringen. Für Windows-Nutzer, vermutlich 70 % aller Computer-Nutzer, ist die Ox-Box nur teilweise nutzbar und nicht empfehlenswert. Warum werden Windows-Nutzer so schlecht von Ihrem Unternehmen behandelt?

M. Harvey

September 18, 2020

The Ox amp top box rocks

Wow! I can't believe what a difference this has made for my recorded guitar tones. Being able to have my tube amp in its sweet spot playing through whatever cabinet and mic combo I'm looking for at the moment, and to have it feel and sound so awesome like I recorded it in a great space is phenomenal! This is going to bring my productions to pro levels. I'm recording through the spdif connection into my x8 Apollo interface and I couldn't be happier. If I just want to play without disturbing the household it's nice to be able to play through the speaker or headphones at reasonable volume and still feel that sweet tone, minus the cab and mic/room emulations though. As for the wifi connection issues I've seen others have posted, I haven't had any. I love everything this box does and wish I had known about it long ago. In my opinion it is much better than any of the amp plugins I've been using trying to achieve big realistic guitar tones. Thank you UAD! Like the Ox, you guys rock! And I didn't even mention the top notch onboard signal processing.

J. Romanchik

May 6, 2020

Make it hardwire-able!

Was REALLY looking forward to using this. But have been stuck using only the 6 presets on the front. Will not connect to WiFi. There is ZERO customer service! Dont want to return this but if i cant access the app there is no way it is worth $1300. ABSOLUTELY RIDICULOUS

m. nelson

February 17, 2020

Updated Review: UA finally got it right

about a year or so, I left a review of the OX, and I definitely shared my pros and cons. However, After a recent firmware update that brought more cabinets, and an overall better sound, I can say that this is the best of its kind.

About 2 years ago, My band "Ornimental" started to record our second record and one of our microphones crapped out right in the middle of guitar tracking. When we heard that UA was making the OX, We got in line to pay for it pretty much immediately. After recording with the OX out of the box, It took us a while to get something we liked, and we weren't 100% on the sound. We ended up with the 4x12 greenback "punch" for guitars, but it wasn't up to our standard.

I mentioned before that the OX was amazing for the old school guys that want that retro sound, but it's not too tone friendly with people desiring more modern sounds. Well, After their 2nd firmware release, I can say that everything sound incredible! Just have the V30 cabs in the library changed everything for us. Even though we can't go back to doing the guitars for the record, we are ready to tackle the next one with better tones!

The OX is the best piece of gear for guitar recording!

D. Williams

February 16, 2020

Innovative & Dynamic

Unparalleled build quality, a plethora of more-than-realistic cab and mic options, results in lush tube amp tones to die for. Great product. My only complaint is the limited either/or wifi or internet connection. Hopefully, you all will develop a direct connection between computer and the ‘Ox’, this would be great. Nonetheless, I am blown away.

J. Leyton

January 25, 2020


Love the OX and have had one since it came out. Rabear, you just get better and better. You are a real accomplished player now. Looking forward to hearing more from you.

M. Tuttle

December 21, 2019

Quite Useful

I bought one when they first came out and I've never had an issue. Updating via my Mac was no issue when following the instructions and having my iPad close by means it is very simple to change parameters at any moment.

S. Lauzon

November 27, 2019

Lots of issues.

I have the OX. I bought it about 7 months ago and it’s clumsy. Aside from the fact that you have to constantly switch WiFi to OX, then back to your router, even after you’ve set everything up! It’s ridiculous.

There’s been a update, which I was excited about briefly. Here’s why:

1. You need a usb flash drive to do this. It says you can do it over WiFi but not if you update the OX app first. My apps are setup for auto updates. So the firmware is incompatible and the app WILL NOT open because of this issue. I haven’t been able to open the app to change cabs or mics since nov 4th.

2. Customer service is awful. I’ve had a ticket out for 2 days now and no reply... nothing.

3. You may buy the wrong flash drive (as I did 2 times. Why two times? Well. It doesn’t say anywhere on the notes for the update which beans works. I’ve spent $30 and still can’t update firmware. The site says *try different one if not recognized. Yeah - cause I have lots of usb flash drives. They are almost obsolete....

4. If you have the issues I’ve had, it’s a glorified paperweight.

All of this is why I’m going to sell it at a 3-400$$ loss and go back to the easy to operate and use Mesa Cab Clone. I can’t honestly say I hear a 1000$$ difference anyway.

Sam L

G. Herrera

November 23, 2019

Faithful to this Unit

Having bought this when it first came out, I was really Loving what it did for my recordings, and now with the Update, OMG so Complete! I can get any tone I need Period! The ease of use just makes it fun and Inspiring, this is worth every penny and will never get rid of this Unit. Thanks UA

w. visbeen

November 17, 2019

No sleep but more than alive.

Bought the ox mainly for attenuator function. Speaker connector combo too short. While waiting for cable dived into the cab emulations and haven't slept since. Can't remember having had so much fun with my amp. Thank you so much!

K. Robinson

November 14, 2019

Awesome bit of kit!

Thank you for the new update!

I use the OX live all the time and having the footswitchable effects is brilliant now. I can now crank my amp (JTM 45) and get a volume boost for solos using the EQ on the OX. Super useful!

A. Walton

November 13, 2019

Epic bit of kit.

Absolutely love this , candy in my studio. The Nov 19 update is just glorious. Well done UA.

r. stepan

October 31, 2019

Wow we can use our 30 tube amps in our recording studio direct into Logic

This Ox sounds fantastic and we can dime our JCM 800’s and Silver Jubees Mesa
Orange etc and they sound fantastic. We use our FractalAxe Fx for some effects but
the cabs sims and UA quality is top drawer. Recording our clients without dragging out
a bunch of cabs is over...we do it all on theMac.
Fantastic piece of kit..great job guys....

J. Metzger

October 26, 2019


I am really impressed just wow ! I was skeptical at first but after using the ox to record some clean guitar i couldn’t believe how dynamic and easy the guitar was to control . This device is ahead of the heard if you ask me . There seems to be some sort of magic going on here , I can now record my guitar without second guessing myself because the ox makes it so easy to get a great tone and record in mono or stereo when I need without having to adjust a bunch of settings . You get the sound you like , hit record and you have professional sounding guitar tracks . Great job uad !! This paired with an Apollo is a match made in heaven .

121-140 of 223 Results