Universal Audio OX | Amp Top Box
The Universal Audio OX | Amp Top Box is a premium reactive load box and speaker cabinet emulation system designed to deliver authentic cranked tube amp tone at any volume. Combining advanced reactive load technology with world-class speaker, microphone, and room emulations, OX provides guitarists and producers with a complete studio-quality recording and silent playing solution.
Designed for use with real tube amplifiers, OX allows you to safely run your amp at its optimal sweet spot while capturing fully miked cabinet tones without the need for loud speaker cabinets or complex microphone setups. Whether recording in the studio, practicing silently, or sending direct tones to FOH, OX delivers realistic amp feel and detailed cabinet response with exceptional accuracy.
Reactive Load Technology
At the heart of OX is Universal Audio’s advanced reactive load system, engineered to replicate the impedance and dynamic interaction of a real speaker cabinet. This preserves the natural response, feel, and harmonic behaviour of your amplifier while allowing silent recording and attenuation.
Professional Cabinet & Room Emulation
OX features meticulously modeled speaker cabinets, microphones, and studio room environments, allowing users to create polished, mix-ready guitar tones instantly. The integrated processing includes:
- Multiple classic speaker cabinet models
- Dynamic and condenser microphone emulations
- Studio room ambience and effects
- Compression, EQ, and delay processing
Control and customization are easily handled via the companion app, enabling deep tone shaping and preset management.
Features
- Reactive load box for tube amplifiers
- Integrated speaker cabinet emulation
- Authentic microphone and room modeling
- Built-in studio effects and processing
- Silent recording and amp attenuation
- Companion app for deep editing and preset management
- Professional direct recording and FOH solution
- Premium studio-grade sound quality
Applications
- Silent tube amp recording
- Professional studio guitar production
- Direct-to-FOH live guitar rigs
- Home studio and low-volume practice
- Hybrid analog/digital guitar workflows
Technical Specifications
- Type: Reactive load box and cabinet emulator
- Compatibility: Tube amplifiers
- Features: Speaker emulation, mic modeling, room emulation, effects
- Connectivity: Speaker input, line outputs, headphone output
- Control: App-based editing and preset management
- Format: Desktop / amp-top unit
