This Universal Audio OX Box is a premium reactive load box and speaker emulator that lets you capture the sound of a cranked tube amplifier at any volume, from whisper-quiet monitoring to direct recording. Whether you're tracking in the studio, practicing at home, or sending a consistent signal to front of house, the OX Box delivers authentic cabinet, microphone, and room emulations without sacrificing the feel of your amplifier.

Designed around Universal Audio's reactive load technology, the OX Box preserves the dynamic response of your tube amp while providing access to a library of meticulously modeled speaker cabinets, microphones, studio effects, and room ambience. It has become a favorite among professional guitarists and recording engineers for producing polished, mix-ready guitar tones with minimal setup and exceptional consistency.