Universal Audio OX | Amp Top Box

Get the ultimate sound from your tube amplifier anywhere and at all levels.

With Universal Audio's OX Amp Top Box, you can play on your favorite tube amplifier screwed up to the level where it plays best without disturbing the neighbors or drowning out the others in the band.

But it can do much more than that: With UA's Dynamic Speaker Modeling system, you get access to lots of authentic microphone and guitar case simulations.
First-class analog components and one of the world's best “reactive load” circuits ensure that you hear all the details, dynamics and harmonious complexity that your amplifier can provide.
OX Amp Top Box is the perfect solution for the guitarist in the sound studio or in the orchestra pit in the theater, where you can get maximum performance from your amplifier at a balanced sound level.

As OX is a reactive load box, it responds in a complex and non-linear way when you play on the amplifier - just as you experience with a connected speaker cabinet. This allows you to achieve the characteristic "cone cry", which is only generated at certain frequencies and volumes. And you can hear the vivid sound of a speaker being pushed to the extreme when you fully turn up the amplifier, even though the sound level is at bedroom level. You can not only hear the complex sonic reactions from the amplifier, you can also feel them, as OX responds in your own way to play exactly as a well-matched amplifier / cabinet setup does.

With dozens of microphone and cabinet emulations available, you get plenty of flexibility in the studio. It's like having a world-class microphone placed perfectly in front of just the right cabinet in a well-sounding studio. Aside from not fussing with the microphone, struggling with reflections and attenuation, eliminating noise, etc. Just plug in your favorite amplifier, use the Rig control button to select the best microphone / cabinet combi, and then you'm ready to record with the coolest sound at all levels of listening.

With the OX app for your computer, iPad or mobile, you have full control over all parameters in your OX via wifi. You have access to the most important parameters and can switch between microphone / cabinet combinations. If you do not want a computer or iPad with you at work, you can upload 6 complete guitar rigs from home, which you can choose directly from the front panel.

Universal Audio OX Amp Top Box Features:

• Reactive load box for tube amplifiers
• Built-in speaker emulation
• Dynamic Speaker modeling emulates all the details from physical speakers
• Access to dozens of microphone and cabinet models
• Play with the amplifier turned up max at all listening levels
• Select 6 configurable mic / cab / FX combinations from the front panel
• Connect foot pedal switch to additional controls
• Switch between 4-, 8- or 16-ohm connection
• Built-in EQ, compressor, delay and reverb in UA quality
• Headphone output
• Balanced line outputs and S / PDIF digital out for recording
• OX mobile / computer app via wifi for remote control