Universal Audio OX Reactive Amp Attenuator with Speaker Modeling

Regular price 39.000.000₫
Sale price 39.000.000₫ Regular price

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. Many recording guitarists at Sweetwater prefer this recording method for maximum sonic control. 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 box for tube amplifiers with built-in speaker emulation
  • Dynamic Speaker modeling emulates the nuanced behavior 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 customizable 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
  • OX requires a 2.4 GHz Wi-Fi connection (5 GHz bands are incompatible)

Tech Specs:

  • Type: Reactive Load
  • Power Handling: 150W RMS
  • Impedance: 4/8/16 ohms
  • Attenuation: 5-way switch
  • Inputs: 1 x 1/4" TS (from amp)
  • Outputs: 1 x 1/4" TS (to speaker), 2 x 1/4" TRS (line/monitor), 1 x Coax (S/PDIF), 1 x Toslink (S/PDIF), 1 x USB Type B, 2 x USB Type A
  • Headphones: 1 x 1/4" TRS
  • Other I/O: 1 x 1/4" (foot control)
  • Features: IR Cab Models
  • Power Source: 12V DC (1.5A) power supply (included)
  • Height: 5.5"
  • Width: 15"
  • Depth: 9"
  • Weight: 14.1 lbs.
  • Manufacturer Part Number: OX