Universal Audio OX Amp Top Load Box w/ Dynamic Mic, Room & Speaker Emulation

The OX Amp Top Box delivers the holy grail of guitar tone – allowing you to push your tube amp to its sweet spot at any volume level while maintaining that coveted cranked amp sound. This premium reactive load box combines Universal Audio’s renowned analog quality with breakthrough Dynamic Speaker Modelling technology, capturing authentic speaker breakup and cone cry that other attenuators simply can’t match. Built like a tank for years of reliable home and studio use, the OX represents the pinnacle of boutique speaker attenuation technology.

The unit offers five carefully calibrated attenuation levels, from complete silence to full band volume, giving you precise control over your amp’s output. The front-panel “Rig” control provides instant access to dozens of album-quality microphone and speaker cabinet emulations, while the integrated world-class UA effects including EQ, compression, delay, and reverb add professional polish to your sound. With selectable 4, 8, and 16-ohm operation, the OX accommodates virtually any tube amp configuration.

Recording capabilities are comprehensive, featuring balanced TRS line outputs and S/PDIF digital outputs for stereo recording, plus a front-panel headphone output for silent practice sessions. The OX pairs seamlessly with Universal Audio’s mobile and desktop applications via Wi-Fi, allowing you to edit and save presets with ease. This combination of premium analog circuitry, cutting-edge speaker modelling, and professional recording features makes the OX Amp Top Box an essential tool for serious guitarists and recording engineers.