Universal Audio OX Amp Top Box
Professional music gear - detailed information and where to buy
Universal Audio
OX Amp Top Box
Product Info
Article Number:
418430
Brand:
Universal Audio
Model:
OX Amp Top Box
Category:
Guitar Amp Attenuators
Price:
$1,428.90
* Prices may vary. Check retailer for current pricing and availability.
The Universal Audio OX is a serious piece of kit for players seeking a truly versatile and high-quality amp attenuator. It nails the feel of playing through different speaker cabinets and offers a convenient way to dial in tones for recording or playing quietly without losing the amp's character. This is a great solution for gigging players or home recordists wanting a premium, all-in-one solution.
Product Description
- Universal Audio OX Amp Top Box
- Analogue Loadbox
- Analogue reactive loadbox for guitar tube amplifiers
- Five tuned guitar amp attenuation levels
- Rig control for pre-set microphone and speaker box emulations
- UA Dynamic Speaker Modelling accurately models the behaviour of a speaker and membrane resonances
- Integrated UA EQ compression
- delay and reverb effects
- Ohm operation selectable (4
- and 16 Ohm)
- Max. power handling: 150 W
- Connectors: Line output 6.3 mm jack balanced
- S/PDIF output
- Headphone output: 6.3 mm jack
- Pairing via WiFi with OX mobile or desktop app to edit and save presets (for Windows 10 and macOS: Sierra or High Sierra)
- Suitable cases: Article Nr. #469012# and #505416# (both not included)
PROS
- • Exceptional UA Dynamic Speaker Modelling creates remarkably realistic amp tones.
- • Five attenuation levels offer broad volume control without sacrificing tone.
- • Integrated effects provide convenient, high-quality ambience shaping.
- • WiFi connectivity and app control unlock extensive preset customization.
CONS
- • The unit's weight makes it less than ideal for frequent transport.
- • Premium-priced, limiting accessibility for budget-conscious players.
- • Limited power handling restricts use with extremely high-wattage amplifiers.
Product Video
Key Features
Power Rating
150 W
Impedance
4, 8, 16 Ohm
Controls
Attenuation levels, EQ, Compression, Delay, Reverb, Preset selection
Reactive/Resistive
Reactive
Speaker Output
Simulated Speaker Emulations (via Line/S/PDIF)
Weight
24.5 lbs
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Frequently Asked Questions
Unlike many static emulations, UA’s Dynamic Speaker Modelling accounts for membrane resonance and speaker behavior, resulting in a more nuanced and responsive feel that closely mirrors a real cabinet.
While it handles up to 150W, exceeding that limit risks damage. It's best suited for amps in the 50-150W range to ensure safe operation and optimal performance.
The front panel offers basic functionality, but the app unlocks the full potential with extensive preset editing, sharing, and detailed control over the speaker emulations and effects.
