Universal Audio OX Amp Top Box – Reactive Load Box & Speaker Simulator – Excellent Condition – w/ Box, Manual & Accessories

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The Universal Audio OX Amp Top Box is one of the most advanced reactive load boxes and speaker simulation systems available. Designed for professional guitarists and studios, the OX allows you to run your tube amp at optimal levels while capturing studio-quality tones silently or at controlled volume.

Featuring UA’s premium speaker modeling, room mics, and effects processing, the OX delivers incredibly realistic cab tones for recording, live performance, or silent practice. Control is handled via the OX app, giving you access to deep tone shaping and preset management.

This unit is in Excellent Condition and includes the original box, manual, and accessories, making it a complete setup ready to use.

Specs & Features

Model: Universal Audio OX Amp Top Box

Type: Reactive Load Box / Speaker Simulator / Attenuator

Compatibility: Tube Amplifiers

Speaker Modeling: Multiple cab, mic, and room simulations

Effects: Built-in studio-quality compression, EQ, reverb, delay

Outputs: Line Out, Headphone Out, S/PDIF Digital Out

Connectivity: Wi-Fi App Control (iOS / Desktop)

Impedance: 4, 8, 16 Ohm Compatible

Construction: Rugged Metal Housing

Included: Original Box, Manual, Power Supply & Accessories

Condition

Excellent condition overall

Very light cosmetic wear

No damage or repairs

Fully tested and working perfectly

Complete package with original materials

Why Choose This UA OX?

Industry-leading reactive load and cab simulation

Studio-quality tone without mic’ing a cab

Perfect for silent recording and live rigs

Deep control via app-based interface

Includes original box and accessories

Important Notice – Please Read Before Buying

Please review all photos carefully

Reverb condition guidelines apply

Ask any questions before purchasing

What You See Is What You Get

The unit shown in the photos is the exact one you will receive. No stock images are used. Please review all photos carefully before ordering.

Ask Before You Order

Feel free to contact us with any questions regarding compatibility, setup, or specs.

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