"I adore OX. Everything sounds magnificent. The hardware and software are a pleasure to use. You can get instant results via presets, or dig deep and design from scratch." - Premier Guitar
"The Universal Audio OX Amp Top Box is a brilliantly engineered device with many application possibilities." - Art Thompson, GuitarPlayer
Reactive Amp Attenuator with Speaker Modeling / / Get Legendary Studio Tones from your Tube Amp — Anywhere, at Any Volume.
The World’s Best Reactive Load Box
With decades of analog hardware engineering expertise, Universal Audio’s dream team of engineers set out to design a reactive load box that retains the tone, dynamics, and feel of your tube amp — no matter how much it’s attenuated. The goal was for your tube amp to “see” OX as an actual speaker — with continuously variable impedance and response — so you don’t lose a drop of tone or playing dynamics.
A Complete Guitar Recording System
OX’s front-panel, six-position RIG control allows you to quickly choose from complete setups — including emulated speaker cabinets, close mics, ambient room mics, and up to four simultaneous studio effects. OX is also the only guitar recording system to offer a complete selection of expertly placed room mics, giving you the authentic experience of pushing air while recording your cranked amp in a world-class tracking room.
Dynamic Speaker Modeling
UA’s groundbreaking Dynamic Speaker Modeling faithfully emulates speaker breakup, drive, and cone cry — an essential ingredient to authentic tube amp tones. Using the Speaker Breakup knob in the OX app, you can control the harmonics and sonic complexity that occurs only at certain frequencies and volume levels on various speakers — far beyond a static Impulse Response system — giving you the same sonic phenomenon that occurs with a real speaker cabinet.
A Beautiful Software App
All The Right Connections
Meet With A Passionate Product Specialist
Our sales staff are on hand to answer all of your questions. Whether you’re picking up your next microphone, an audio interface or planning a new studio from the ground up, we can help. Contact us or visit our showroom