Universal Audio OX Reactive Amp Attenuator with Speaker Modeling

A More Flexible Approach to Using Your Tube Amplifier

The Universal Audio OX Amp Top Box is a powerful recording solution that allows users to play tube amplifiers at their sonic best at any volume level. It features Dynamic Speaker modeling technology, premium analog components, and a reactive load circuit for accurate mic and guitar cabinet emulations.

What’s New with Firmware v1.2?

A free firmware update upgrades your Universal Audio OX to the most recent speaker models and artist RIGs (presets) from Universal Audio, as well as some live-ready amp and footswitch functionality. Here’s what’s included.

Five new speaker cabinets.

4×12 UK The Vee 30 cabinet features four 12″ speakers and is ideal for amp tones that are heavy, distorted, or scooped.

The 4×12 CA Vee 30 cabinet is a classic closed-back model that is widely used in the rock and metal business.

The 4×12 GB 30 closed-back cabinet has 30W “green” speakers that provide clear clarity and precise bass response.

The 2×12 JBF 120 cabinet from the late 1960s provides punch and articulation, making it ideal for powerful and clean tube amps in genres like as country, surf, and psychedelic rock.

The 1×12 JBG 125 speaker was popular among boutique amp builders in the 1970s and 1980s. It is comparable to the JBF 120 but warmer in tone.

7 RIGs inspired by iconic stage and studio tones.

Universal Audio OX is the newest RIG that pays homage to iconic tones by Eric Johnson, the Beatles, the Grateful Dead, Kansas, Metallica, Steve Vai, Mark Tremonti, Deep Purple, Pat Metheny, John Frusciante, and others.

Increased footswitch control.

In addition to the new tones, the newest firmware provides hands-free control of the OX’s onboard FX via your 1-, 2-, or 3-button footswitches.

Solid-state amplifier support.

Universal Audio OX has proven itself with tube amplifiers. Now it’s time to test its solid-state amplifier support. Just make sure to verify your amplifier’s output rating to avoid exceeding the OX’s maximum input power handling of 150W RMS.

Reactive load circuit for realistic speaker response: no cabinet needed.

Universal Audio claims: OX has the greatest reactive load circuit in the world, allowing you to crank up your amp for a harmonically rich tone while keeping loudness at a manageable level. Reactive load circuits react to your amplifier’s signal in the same manner that a genuine speaker cabinet does. That means you’ll hear and feel every sonic nuance and harmonic complexity your amplifier has to offer, even if you’re playing at a volume that won’t disturb your neighbors. Or even with headphones. You’ll feel as if you’re playing through a genuine speaker cabinet since the reactive load responds in the same way — which is likely to improve your performance.

Accurate speaker breakup and cone cry distinguish OX.

Because Universal Audio OX is a reactive load box, it reacts in a complicated and non-linear manner to the signal you provide it from your amp, exactly like a real speaker cabinet. That implies you may generate a genuine “cone cry,” which is the production of extra harmonics in a speaker cone at specific frequencies and volume levels. And when you drive your amplifier, you’ll hear genuine speaker breakup, even if OX keeps the volume low. These sonically-sweet subtleties will not only be heard but also felt, as OX responds to the nuances of your own playing style.

The best recording tool for guitarists?

With hundreds of microphone and guitar cabinet emulation options, OX provides a great deal of freedom in the studio. It’s like having a world-class microphone set in the ideal position in front of a premium speaker cabinet in a great-sounding studio environment. Except you don’t have to set up a microphone, deal with acoustic reflections, combat noise, and so forth. Simply connect in your preferred amplifier, experiment with mic and cab combinations using the Rig control, and you’ll be able to record with great tone at any volume level.

Remote control over Wi-Fi with an app for Windows, Mac, and iPad

The OX app for your PC, Mac, or iPad gives you complete control over OX’s settings over your local Wi-Fi network. Access key settings, alter mic and cabinet combinations, and do much more from anywhere using Wi-Fi. Don’t want to bring a PC or iPad to the gig? Not a problem! UA lets you load up to six entire rigs onto the front panel selection switch, allowing you to go from a modest combination to a big stack with a single twist. This comprises every single, tweakable parameter inside OX’s vast range of control.

Universal Audio OX Amp Top Box Specifications:

• Reactive load box for tube amplifiers with built-in speaker simulation.
• Dynamic Speaker modeling simulates the subtle behavior of actual moving speakers.
• Access hundreds of microphone and guitar cabinet models.
• Allows for cranked-amp tones at any volume level.
• The “rig” controls select six customizable mic/cab/FX combinations.
• “Room” adjusts the ambient sound of the Rig simulation.
• Footswitch input provides extra control possibilities.
• Operate at 4-, 8-, or 16-ohms.
• Built-in effects include EQ, compression, delay, and reverb.
• The headphone output allows for silent practice.
• Balanced line outputs and S/PDIF digital output for recording.
• Use Windows, Mac, and iPad applications over Wi-Fi for remote control.
• OX needs a 2.4 GHz Wi-Fi connection. (5 GHz bands are incompatible).