Universal Audio Ox Stomp Dynamic Speaker Emulator Effects Pedal

The UAFX OX Stomp is a high-end stereo guitar pedal crafted by Universal Audio that brings ultra-realistic speaker cabinet, microphone and room emulations to your rig. Built on the same modelling technology as UA’s flagship OX Amp Top Box, the OX Stomp offers what the manufacturer describes as “three-dimensional, album-ready guitar tones” in a pedalboard-friendly format.
In short: pair it with your amp-modeler, preamp, or line-level device, and you get top-tier cab/mic/room modelling plus studio-grade effects, without needing a full rack or reactive load box.

Key Features & Tone Highlights

• Dynamic Speaker Modeling: The OX Stomp uses UA’s proprietary modelling to simulate speaker breakup, cone cry, drive and interaction between speaker, cabinet and room — going beyond what typical IR (Impulse Response) loaders offer.
• Cabinet, Microphone & Room Emulation: It offers 22 selectable speaker-cab models (various sizes/brands) and six vintage mic models + room mic ambient modelling.
• Studio-Quality Effects Built In: Alongside cab/mic modelling, the pedal includes four simultaneous stereo effects: 4-band EQ (+ high/low cut), a legendary style 1176 compressor emulation, stereo delay/modulation options and a plate reverb. 
• Deep Mobile / App Control: The companion UA UAFX Control mobile app lets you browse and load factory “Rigs”, customise cab/mic/room/effects parameters, save presets, configure footswitch behaviour — offering a level of flexibility beyond typical stompboxes.
• Stereo In/Out + Pedalboard Form-Factor: Designed to accommodate stereo signal chains (input 1 & 2, output 1 & 2) and line-level sources. That means you can feed it from an amp-sim unit, line output of an amp/preamp, or other modeler. The manual emphasises: this is not a speaker load box or power-amp substitute — you’re dealing with line-level signal processing.

Why It Matters

Many guitarists today record or gig direct, or use “amp-in-a-box” modelers (pedals, multi-effects, profiles). The OX Stomp fills a common missing link: high-quality cabinet/mic/room emulation combined with effects — all in a stomp format.
Thus, if you’ve invested in a digital amp modeler or preamp but still want that “real amp in a room” vibe (with mic placement, room ambience, speaker breakup), this pedal aims to deliver exactly that — without lugging stacks or relying solely on IRs. Reviews remark that it “goes far beyond common IR loaders”. 

Ideal Use-Cases

• Line-out / Amp-Modeler rigs: If you use a pedal-based amp modeler (or preamp with line out) and feed directly into a PA, FRFR (flat response) speaker, or DAW, the OX Stomp gives you premium cabinet & room realism.
• Recording direct / Re-amping: Use it between your signal chain and audio interface for studio-ready tones, including mic selection and room models.
• Pedalboard / rehearsal / live: For players who want one box after their modeler that handles cab/mic/room plus optional delay/reverb/mod and manage presets via mobile app.
• Hybrid rigs: You might split outputs to stage amp and FOH/-recording chain, using the OX Stomp to shape what goes to the PA or interface, while keeping stage volume separate.

If you’re looking for a high-fidelity solution to capture award-quality speaker/cabinet/mic/room tones — especially when using amp modelers, direct recording or FRFR rigs — the OX Stomp stands out. It brings together dynamic speaker modelling, detailed mic placement, room ambience and built-in effects in a convenient pedal form.
In other words: turn your modeler or preamp into a studio-miked amp rig, without the bulky gear.