Get perfectly miked amp tones and effects, from a pedal

Standing on the shoulders of Universal Audio's award-winning OX Amp Top Box, the UAFX OX Stomp Dynamic Speaker Emulator pedal gives amp-in-a-box modelers a packed pro studio full of authentic-sounding guitar cabinets, mics, room modeling, and studio-quality effects — right at your feet.

Say Goodbye to Static-Sounding IRs

Going far beyond the one-dimensional captures of Impulse Response systems, only UA’s groundbreaking Dynamic Speaker Modeling convincingly emulates speaker breakup, drive, and cone cry — providing harmonics and sonic complexity indistinguishable from a perfectly studio-miked speaker cabinet.

Experience Award-winning Room Emulation

In addition to expertly placed close condenser, dynamic, and ribbon mics on your cabs, the UAFX OX Stomp is the only effects pedal to offer a complete selection of room mics with Dynamic Room Modeling. This gives you the authentic experience of pushing air while recording your cranked amp in a world-class tracking room.

Key Features:

• Extraordinarily lifelike cabinet, microphone, and effect modeler, designed to elevate amp-in-a-box pedals and digital amplifier modeling units with perfectly produced tones
• 22 speaker cabinet simulations, offering some of the iconic cab and speaker combos in guitar history
• Universal Audio Dynamic Speaker Modeling captures every sonic detail and harmonic nuance of the Ox Stomp’s speaker selection, including speaker breakup, cone cry, and speaker drive
• 6 precisely modeled vintage microphone emulations supply a studio-grade snapshot of your chosen cab
• Up to 3 microphones emulations can be dialed in at once: Mic 1, Mic 2, and Room (your room mic selection)
• UAFX Control app offers a wealth of effects to choose from, including UA 1176 compression, reverb, EQ (including per-mic EQ) stereo delay, mic placement options, and more
• 6-position Rig knob grants instant access to your favorite cab/mic/effect combinations
• Second footswitch can be configured to function as a mirror to the A footswitch, effectively giving you 6 unique rigs to choose from
• Includes 100 expertly curated rig setups for track-ready tones right out of the box
• Analog dry through to keep your dry signal pure when the effect is disengaged
• Durable metal enclosure with silent switching
• USB-C port for easy updates
• Requires a dedicated 9V DC, center-negative, 400mA power supply (not included)