Universal Audio OX Amp Top Box – Used (Excellent Condition)

This used Universal Audio OX Amp Top Box is in excellent condition and functions flawlessly. The OX is a premium reactive load box and speaker cabinet simulator designed to let you run your tube amp at optimal levels while capturing studio-quality tones silently or at controlled volume.

Featuring UA’s dynamic speaker modeling and built-in studio effects—including compression, EQ, reverb, and delay—the OX delivers mix-ready cabinet tones straight to your interface, monitors, or FOH. Its reactive load preserves the natural feel and response of your amp, making it ideal for recording, silent practice, or live performance with consistent results.

With selectable speaker cabinets, mic combinations, and room simulations accessible via the OX app, it provides incredible flexibility while maintaining the organic character of your amplifier.

A professional-grade solution for players who want authentic tube amp tone with total volume control and studio-quality recording capability.