SKU: 24258298330

Universal Audio OX Amp Top Box

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Description

Universal Audio OX Amp Top BoxUniversal Audio OX Amp Top Box at Vinyl Sound Toronto Canada The Universal Audio OX is a premium reactive load box and guitar recording system that lets you record and practice with any tube amplifier at any volume level, delivering authentic speaker cabinet emulations, microphone simulations, and studio quality room modeling from a single front panel RIG knob. Developed by Universal Audio (Santa Cruz, California, USA) and available at Vinyl Sound in

Universal Audio OX Amp Top Box at Vinyl Sound Toronto Canada

The Universal Audio OX is a premium reactive load box and guitar recording system that lets you record and practice with any tube amplifier at any volume level, delivering authentic speaker cabinet emulations, microphone simulations, and studio-quality room modeling from a single front-panel RIG knob. Developed by Universal Audio (Santa Cruz, California, USA) and available at Vinyl Sound in Toronto, Canada, the OX features UA's proprietary Dynamic Speaker Modeling to emulate speaker breakup, drive, and cone cry for reference-quality tube amp tones at any output level.

Reactive Load Box with Full Amp Dynamics

Universal Audio's engineering team designed the OX's reactive load section to present your tube amplifier with continuously variable impedance and response, so the amplifier behaves exactly as it would driving a real speaker cabinet regardless of the attenuation level selected. Output transformer loading, power tube compression, and tonal response all remain authentic from clean to fully cranked settings, preserving the playing dynamics and feel that conventional resistive load boxes eliminate.

Dynamic Speaker Modeling

UA's Dynamic Speaker Modeling faithfully emulates speaker breakup, drive, and cone cry, characteristics of authentic tube amp tones that static impulse response systems cannot reproduce. The Speaker Breakup control in the OX application adjusts the harmonics and sonic complexity that occurs at specific frequencies and volume levels on various speaker designs, delivering the same dynamic phenomena as a real speaker cabinet reacting to your playing in real time.

RIG Control and Cabinet Emulation

The OX's six-position front-panel RIG knob provides instant access to complete setups including emulated speaker cabinets, close microphones, ambient room microphones, and up to four simultaneous studio effects. The OX application, compatible with iPad, Mac, and Windows computers via Wi-Fi, provides access to over 100 custom Rigs with full parametric control over all cabinet, mic, and room settings. Six favorite Rigs save directly to the front-panel RIG positions for instant recall in the studio or on stage.

Connections and Recording Workflow

The OX Amp Top Box provides stereo S/PDIF digital outputs via RCA and optical TOSLINK for direct connection to any audio interface or DAW, alongside balanced TRS stereo line outputs with front-panel level control for studio monitors or live mixing console inputs. A front-panel headphone output enables silent practice with any cranked tube amplifier, and a footswitch input accepts any one, two, or three-button footswitch for hands-free effects switching during performance or recording.

Frequently Asked Questions

What is the Universal Audio OX Amp Top Box?

The Universal Audio OX is a reactive load box and guitar recording system that connects between your tube amplifier and speaker cabinet, allowing you to run your amp at full power while controlling the listening volume independently. It emulates speaker cabinets, close microphones, ambient room microphones, and studio effects via a front-panel RIG knob and the OX Wi-Fi application, and features UA's Dynamic Speaker Modeling to accurately reproduce speaker breakup, cone cry, and drive at any listening volume. Available at Vinyl Sound in Toronto, Canada.

Does the UA OX work with any tube amplifier?

The OX Amp Top Box is compatible with any tube amplifier with an output impedance of 4, 8, or 16 ohms. The reactive load section presents your amplifier with continuously variable impedance that mimics a real speaker cabinet, preserving the amplifier's tonal characteristics, output transformer behaviour, and power tube compression at all attenuation levels. Always match your amplifier's output impedance setting to the OX before connecting.

Can I use the UA OX for silent recording and practice?

Yes. The OX includes a front-panel headphone output for completely silent practice and recording at any tube amp output level. Using the OX application via Wi-Fi from an iPad, Mac, or Windows computer, you can select speaker cabinet emulations, room microphones, and effects while monitoring through headphones, making the OX suitable for apartment practice, late-night sessions, or any environment where speaker cabinet volume is not practical.

What is Dynamic Speaker Modeling and how is it different from impulse responses?

Dynamic Speaker Modeling is Universal Audio's proprietary technology for emulating the behaviour of a real guitar speaker under drive. Unlike conventional impulse response systems, which capture a static snapshot of a speaker's frequency response, Dynamic Speaker Modeling emulates the dynamic changes in speaker behaviour that occur at different volume and drive levels, including speaker breakup, cone cry, and harmonic compression. The OX Speaker Breakup control adjusts the intensity of this emulation to match your playing style and amp output.

How does the OX connect to a recording setup?

The OX provides stereo S/PDIF digital outputs via RCA and optical TOSLINK connectors, balanced TRS stereo line outputs with front-panel level control, and a front-panel headphone output. The digital outputs connect directly to any audio interface with S/PDIF input for recording into a DAW, while the balanced line outputs feed studio monitors or live mixing console inputs. A speaker output also passes signal through to a real cabinet for applications requiring both OX emulation and a live cabinet simultaneously.

What does the OX application control?

The OX application connects to the OX Amp Top Box via Wi-Fi and is compatible with iPad, Mac, and Windows computers. It provides access to over 100 factory and third-party Rigs, each comprising a speaker cabinet emulation, close microphone, ambient room microphone selection, and up to four studio effects. All parameters including speaker type, mic placement, room size, reverb, delay, chorus, and the Speaker Breakup control are adjustable from the app, with six favorites saveable directly to the front-panel RIG positions.

Where can I buy the Universal Audio OX in Toronto or Canada?

The Universal Audio OX Amp Top Box is available at Vinyl Sound, an authorized Universal Audio dealer in Toronto, Canada. Browse the full Universal Audio collection at Vinyl Sound or contact our team to discuss the OX alongside other UA hardware for your recording setup.

Shipping Notes
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Exchange/Return Notes
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SKU: 24258298330

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4.9 ★★★★★
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R
Ruddin
Houston, US
★★★★★ 5
immersive
Format: Hardcover
Once in awhile when I feel there are a lot of things pulling at me all at once, I will read this book to guide me/ give me ideas to sort out all the pulls. Highly recommended for those who find works in the connected world expect us to attend to all details and requests immediately but we know that are not the right deals for us.
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Reviewed in the United States on January 11, 2006
M
Monsop Collado Madrigal.
San Leandro, US
★★★★★ 3
A Few Gems, but Not the Right Fit for Me
Format: Kindle
This book focuses on the 80/20 principle, emphasizing the importance of identifying and maximizing the 20% of activities that yield the greatest results. While it offers valuable insights on growth, creativity, and leveraging strengths, it didn’t resonate with me personally, and I found the reading experience less enjoyable. Key Takeaways: • Growth requires creating something new and meaningful, not maintaining the status quo. • Focus on your “20% spike”—your unique strengths—and develop them like an athlete. • Use the 80/20 principle to identify the most profitable parts of a business. Overall, the ideas are useful, but the book didn’t fully capture my interest or provide practical applications I could relate to.
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Reviewed in the United States on January 19, 2025
B
Verified Purchase
Bubbalicious
Chelsea, US
★★★★★ 1
An empty-hearted effort
Format: Kindle
Managing personal efficiency is no doubt an important skill. And judging from the author's success from the first book, I assume he is a credible author. But this book is just way too shallow and lacks the evidence of any sinerity for the readers. If you are new to the concept of life efficiency management, it might be good to read his first book. If you are looking for a good framework or advice on how to achieve your goal, then you will for sure be disappointed. This whole book is just about stressing the importance of efficiency management. Absolutely anything else!
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Reviewed in the United States on October 20, 2012
G
Verified Purchase
gg
Pawtucket, US
★★★★★ 4
Four Stars
Format: Hardcover
great for the 80/20 library
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2016
K
Verified Purchase
KT
Carnegie, US
★★★★★ 5
Book Review of The Alchemist
Format: Paperback
In The Alchemist, Paulo Coelho uses diction, syntax, and the hero cycle to keep the pace of the book constant, and keep the reader intrigued. But, he does have a few flaws present in the book. The Alchemist is a book about a boy named Santiago, who goes on an adventure to find his “Personal Legend” or treasure. Coelho uses the hero cycle to add more emphasis on the plot, which overall makes the story more entertaining. In the story, the Old King tells Santiago that “when someone wants to realize his or her Personal Legend,” he will “always [be] nearby.” (67) This is an example of atonement with the father, because the Old King’s closeness creates a father like figure in him, who is there to support Santiago. The hero cycle for me made the story more enjoyable and kept me reading. Also most of the book is him trying to obtain his Personal Legend, which is “what you have always wanted to accomplish.” (23) Compared to other books I have read this year in my English class, this one was easier to follow in terms of diction. The language that Paulo Coelho uses in the novel overall is not too difficult to understand. Word choice is done very well, and lets the reader flow through the book at a constant pace. The diction also makes the book a novel for a wide range of readers. The hero cycle with the clean diction made the story very enjoyable. While reading this book, I found that it was fairly easy to understand the passage, and that it was very inviting. Paulo Coelho structures the syntax of the book in an easy-to-understand format. Throughout the book, the syntax helps the reader understand where they are on the page, and it also positively affects the pace set by the diction in the book. Towards the middle of the novel, the boy says that “An army is coming,” and he knows because he “had a vision.” This dialogue is quickly followed up by a response from a camel driver, saying that “the desert fills men’s hearts with visions.” (104) The quick pace of dialogue keeps the book driving keeps the pace constantly in motion. The syntax made it easier for me to follow the story and follow which character was speaking and what they where feeling or doing. Even though I enjoyed a great bit of the book, there was still another bit that I didn’t fully enjoy. At the beginning of the Alchemist, the book seems to go a slower speed then the rest of it. The first portion of the book has a lot to do with introducing Santiago, the plot, the setting, and more. There is a part in the story where it goes from page 35 to page 38 with very little dialogue, which I felt stopped progress of the story. The first part also has to do a lot with how he discovers his Personal Legend. It took me a little while longer to read the first part of the book then the rest because I was mostly bored while reading it. I also felt that there was more descriptive text than the rest of the book, which really dragged out the first part. In conclusion, the book has lots of great traits and only a few bad ones. I would definitely recommend this book to a friend or anyone who enjoys reading about adventure.
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Reviewed in the United States on January 12, 2016

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