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Universal Audio | OX | Reactive Amp Attenuator Speaker Modeling Top Box

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Original price $3,599.00
Original price $3,599.00 - Original price $3,599.00
Original price $3,599.00
Current price $2,699.00
$2,699.00 - $2,699.00
Current price $2,699.00

A More Flexible Way to Use Your Tube Amplifier

With the Universal Audio OX Amp Top Box, you can play your favorite tube amplifier at its sonic sweet spot at any volume level. And that's just the start — featuring UA's Dynamic Speaker modeling technology, you'll be able to access dozens of spot-on mic and guitar cabinet emulations. Premium analog components and one of the world's best reactive load circuits ensure you'll hear all the dynamics and harmonic complexity your amplifier has to offer. The OX Amp Top Box is a powerful solution for recording, allowing you to achieve those cranked-amp tube tones at any volume level. Instead of a speaker cabinet, plug your tube amp into the Universal Audio OX Amp Top Box to explore a whole new range of tonal possibilities.

Reactive load circuit for realistic speaker response: no cabinet required

Universal Audio claims OX features the best reactive load circuit in the world, allowing you to crank up your amp for harmonically-rich tone while keeping volume at practical levels. Reactive load circuits respond to your amp's signal the same way a real speaker cabinet would. That means you'll hear — and feel — all the sonic nuance and harmonic complexity your amplifier has to offer, even when you're playing at neighbor-friendly volumes. Or even through headphones. You'll feel like you're playing through a real speaker cabinet because the reactive load responds the same way.

Remote control over Wi-Fi with app for Windows, Mac, and iPad

With the OX app for your PC, Mac, or iPad, you have full control over OX's parameters from your local Wi-Fi network. Access key parameters, change mic and cabinet combinations, and much more, from anywhere within Wi-Fi range. Don’t want to carry a computer or iPad to the gig? No problem! UA allows you to load 6 full rigs to the front panel selection switch so you can change from a small combo to a full stack with just a twist. This includes every single, tweaky parameter available within OX’s huge range of control.

  • Reactive load box for tube amplifiers with built-in speaker emulation
  • Dynamic Speaker modeling emulates the nuanced behaviour of real moving speakers
  • Access dozens of mic and guitar cabinet models
  • Allows you to achieve cranked-amp tones at any volume level
  • "Rig" controls elects six customisable mic/cab/FX combinations
  • "Room" controls the ambient room sound of the Rig emulation
  • Footswitch input for additional control options
  • Selectable 4-, 8-, or 16-ohm operation
  • Built-in EQ, compression, delay, and reverb effects
  • Headphone output for silent practice
  • Balanced line outputs and S/PDIF digital output for recording
  • Use Windows, Mac, and iPad apps over Wi-Fi for remote control

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