
Last updated: August 31, 2026. ToneX One specs below come straight from IK Multimedia's product page; all sources are listed at the end.
The IK Multimedia ToneX One might be the most successful mini pedal of the decade, and it earned it: world-class amp captures in a box the size of a phone charger, for well under $200. The Chaos Audio Stratus plays in the same "AI tone in a pedal" conversation at $299. But these two use the word "AI" to mean genuinely different things, and they're built for different jobs on your board. Here's the honest breakdown.
The short version
- ToneX One is the smallest, cheapest way to carry an amp collection. At $179.99 and 160 grams, it slots onto any board, stores 20 presets from IK's 320+ included Tone Models (or 60,000+ on ToneNET), doubles as a USB recording interface, and its output even works as a headphone jack. As a focused capture player, it's brilliant — a focus Stratus deliberately trades away to be the whole rig.
- The two AIs do opposite jobs. IK's AI Machine Modeling uses AI to clone gear that exists — amps, cabs, drives — with stunning accuracy. The Stratus AI FX Builder uses AI to write effects that don't exist, as new DSP code you can even edit. Cloning versus creating.
- Stratus is a full rig, not a station on the board. A free-order effects chain, native NAM amp captures (500,000+ free on TONE3000), a 5-minute looper, Bluetooth app control, full USB-MIDI, and 14 hands-free presets. It costs $119 more because it's several pedals, not one.
Side by side
| Chaos Audio Stratus | IK Multimedia ToneX One | |
|---|---|---|
| Price | $299 | $179.99 (ToneX One+ with MIDI & Bluetooth: $249) |
| What it is | Full multi-effects + NAM amp modeler with a generative AI effects builder | Mini pedal that plays AI-captured Tone Models of amps, cabs, and drive pedals |
| The AI's job | Writes brand-new effects as FAUST DSP code (AI FX Builder) | AI Machine Modeling captures existing gear as playable Tone Models |
| Amp format | Neural Amp Modeler (open standard); 500,000+ free captures & IRs via TONE3000 in-app | IK's proprietary Tone Model format; 320+ included, 60,000+ on ToneNET |
| Effects | 19 free, full chain in any order; premium from $14.90; AI-generated effects unlimited in variety | Onboard EQ, gate, compressor, 5 stereo reverbs; 15 total FX in 7 slots configured via the TONEX software |
| Signal chain | Any effects, any order — limited by CPU, not slots | One Tone Model + FX blocks (pre/post), by design |
| Presets | 128 stored; 14 hands-free via footswitch color pairs | 20 stored; footswitch plays 1 (Stomp) or 2 (A/B) |
| Looper | 5 minutes, unlimited overdubs | None |
| Tuner | Yes | Yes (hold footswitch) |
| Editing | Bluetooth app (iOS/Android) | USB to Mac/PC (TONEX Editor); One+ adds wireless app editing |
| MIDI | Full USB-MIDI map: all 128 presets, per-effect bypass, looper, modes | None on ToneX One; ToneX One+ adds TRS MIDI with 20 presets |
| Headphones | No headphone out | TRS output doubles as headphone out |
| Recording | Free VST/AU plugin versions of your effects (limited DAW support) | USB-C audio interface (24-bit/44.1 kHz); includes TONEX SE + AmpliTube 5 SE |
| Size & weight | 5.5" × 3.125" × 2.125", 11.6 oz | 1.89" × 3.7" × 2.09", 5.6 oz |
| Power | 9V DC 400 mA+ or USB-C | 9V DC 120 mA (not included) or USB-C |
| Best for | Replacing the board: chain + amps + looper + MIDI + inventing effects | Adding world-class amp tones to a board you already love |
Two different kinds of AI
Both companies say "AI" and both mean it — they just point the technology in opposite directions.
IK's AI Machine Modeling is capture technology: point it at an amp, a cab, or a drive pedal (using the included TONEX SE software and your interface), and the AI trains a Tone Model that plays and feels like the real thing. It's cloning, done exceptionally well, and the ecosystem around it is enormous — IK counts 60,000+ Tone Models and presets on ToneNET, browsable by artist, song, or genre.
The Stratus AI FX Builder is generative: describe an effect that may never have existed — not an amp, an effect — and it writes new FAUST DSP code, runs it through multiple rounds of compilation checks, automated code review, and audio-output testing (about 95% of builds deliver a working effect), and sends it to your pedal. Advanced Mode shows you the code. 30 builds a month are free on every account.
So the honest framing isn't "whose AI is better" — it's "cloning or creating?" ToneX One gives you any sound that already exists. Stratus aims at the sounds that don't.
Amp tones
This is ToneX One's home turf, and it's genuinely excellent at it: 320+ premium Tone Models included, IK's VIR multi-IR cabinets, a custom IR loader, and that giant ToneNET library with signature collections from major artists. For $179.99, nothing puts more amp DNA on a board this small.
Stratus runs Neural Amp Modeler Architecture 2 natively — an open format with 500,000+ free captures and IRs on TONE3000. When TONE3000 launched A2, they published quantitative testing across 39 tones plus a blind listening study with over 1,000 participants, and A2 came out ahead of several major capture formats in that study — ToneX among them (the test code and data are open source, so you can check the work). IK's models still sound outstanding; we'd just rather point at published evidence than adjectives, and the format we bet on has it.
Effects and the chain
ToneX One has grown real effects legs: the free TONEX FX update brought it to 15 effects across 7 slots — modulation, two delays, six reverbs, compressor, gate — configurable pre or post via the software, with EQ, gate, comp, and reverb adjustable right on the pedal's micro knobs. For a capture player, that's a generous kit; for many players it's the whole meal.
Stratus is a different animal: the chain is the product. Nineteen effects free, any order, as many as the CPU will carry, plus everything the AI writes for you, a 5-minute looper with unlimited overdubs, and new effects arriving monthly from the Tone Shop (where third-party developers keep 75% of every sale). ToneX One is the world's best last-pedal-in-the-chain; Stratus wants to be the chain.
On stage
ToneX One keeps stage life simple: one footswitch running Stomp (on/off) or Dual (A/B) mode, 9 assignable LED colors so you can tell stacked units apart, and a tuner on a long press. Simple is the point at this size — and if you need program changes, the ToneX One+ adds TRS MIDI access to all 20 presets for $249.
Stratus gives you 14 presets hands-free out of the box — seven color-coded pairs on the Multiknob, footswitch toggling within each pair — 128 presets stored, and a full USB-MIDI map: program changes for every preset, per-effect bypass, looper transport, mode switching. If your set list runs deeper than two sounds a song, that depth is the feature you'll feel.
Recording and included software
Credit where due: IK bundles real value here. ToneX One is a 24-bit USB audio interface, and the box includes TONEX SE and AmpliTube 5 SE — a legitimate desktop rig on day one. Stratus takes the plugin route instead: free VST/AU versions of your effects for the DAW (support is still limited), with the pedal itself focused on the live signal path. If "record straight into the laptop" is your daily workflow, that's a real ToneX One advantage — one Stratus trades for its Bluetooth-first, phone-in-hand editing workflow.
Cost of ownership
ToneX One: $179.99 in, with 320+ models included and optional signature collections after that; the One+ is $249 if you need MIDI and wireless editing. Stratus: $299 in, 19 effects free, premium effects from $14.90 (22-effect bundle $99), half a million free captures, free community effects on Chaos Cloud, and 30 free AI builds monthly. If all you want is amp tones, ToneX One is the value king and we'll say so. The $119 gap buys the chain, the looper, the MIDI depth, and an AI that makes new things — you know which of those you'd use.
Openness
IK's format is proprietary, but the community around it is huge and well-fed — ToneNET is one of the liveliest tone-sharing hubs in guitar. Stratus is open by architecture: NAM as the capture standard, FAUST source access for every AI-built effect, free plugin versions, and a marketplace where developers keep 75%. Both ecosystems are healthy; only one hands you the source code.
Which should you buy?
Buy the ToneX One if: you love the pedalboard you already have and want world-class amp and drive tones added to it in the smallest, cheapest, most reliable way possible — with headphone practice and USB recording thrown in. It's a modern classic, and at $179.99 it's an easy yes for that job.
Buy the Stratus if: you want the whole rig in one box — a chain you design, amps from real captures with published evidence behind the format, a looper, deep MIDI, and an AI that invents effects instead of cloning gear. That's the pedal we built, and it replaces more than one $179 box on the way.
Sources
- IK Multimedia — TONEX ONE product page (features, Tone Model counts, ToneNET figures, dimensions, power, comparison chart incl. ToneX One+ differences)
- Guitar World — TONEX ONE+ launch ($249 pricing and added features)
- TONE3000 — NAM Architecture 2 (A2) (test methodology and results; code and data are open source)
- Chaos Audio — Stratus product page (Stratus specs and pricing)
Ready for the whole rig? The Stratus is $299 with free US shipping — and your first 30 AI builds are on us every month.