Universal Audio Ox Amp top box

Play and record your tube amp in its perfect tonal sweet spot — anywhere, and at any volume

Instantly audition dozens of album-quality mic and guitar cabinet emulations with front panel "Rig" control

Pair your amp to the world's best reactive load, with boutique UA analog quality — built for years of home and studio use

Get authentic "edge of destruction" tones complete with speaker breakup and cone cry, via UA Dynamic Speaker Modeling

• Premium, no-compromise analog reactive load box for tube guitar amps
• Five finely-tuned guitar amp attenuation levels — from off, to whisper quiet, to full band volume
• Front-panel “Rig” control for instant, album-quality mic and speaker cabinet emulations
• UA Dynamic Speaker Modeling emulates speaker breakup and cone cry 
• World-class Universal Audio EQ, compression, delay, and reverb effects built-in
• Selectable 4, 8, and 16-Ohm operation 
• Front-panel Headphone out for silent practice with cranked tones
• Balanced TRS line outs, and S/PDIF digital outputs for stereo recording
• Pair with OX mobile or desktop app over Wi-Fi for editing and saving presets