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

OX Amp Top Box is a premium reactive load box, allowing guitarists to play and record their tube amp in its ideal sweet spots - from the edge- of-breakup to fully cranked - at any volume level, and with instant album-quality mic, room, and speaker cabinet emulations at the turn of a knob.

Featuring Universal Audio's breakthrough Dynamic Speaker Modeling, OX emulates speaker breakup and cone cry like no other box on the market. It's the world's finest boutique speaker attenuator and guitar amp recording solution - overbuilt for years of home and studio use.

- Premium, no-compromise analog reactive load box for tube guitar amps

- Five finely-tuned guitar amp attenuation levels

- 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 outs for recording

- Pair with OX mobile or desktop app over Wi-Fi for editing and saving presets