how these guides are made

A guide written from a single modeler describes one device, on one firmware version, filtered through one person's memory. These guides start from every published source instead. For the Nano Cortex that meant reading the manufacturer's manual, support FAQ, every getting-started article and every firmware release note. All of it was then cross-checked against dealer specification sheets, six professional reviews, and several thousand owner reports on Neural DSP's own community forum.

Where those sources agree, we state it plainly and cite it. Where they conflict, we show the conflict. On this device the manufacturer's own documents conflict in a few places. Where a figure has never been published, we say so instead of filling the gap with a plausible-sounding number. Reading every source catches things no single owner would, and it stays true across firmware releases.

It also closes open questions. Checking the manual against the presets guide, the device list and three dealer listings settled three of them: the factory preset mode, the factory capture count and whether a power supply ships in the box. It also turned a vague “sources disagree on the SAVE hold” into a precise conflict between two Neural DSP documents. Five open items became two.

We own a Nano Cortex and a Quad Cortex, and their panel diagrams are checked against the hardware. Every knob, button, indicator and jack is where it sits on the modeler and carries the name printed on the chassis. We do not own a Helix or a Fractal. Those diagrams are drawn from the manufacturer's own labeled panel drawings, so nothing in those guides is labeled measured.

Every fact on a Gridleak device page carries a source and a reliability label, and the code checks it. A claim without at least one source won't compile. A claim's reliability defaults to its weakest source, so adding a forum post to an official claim can only downgrade it.

Manufacturer documentation drifts, especially across several firmware releases. Those disagreements get their own page in each guide, with both sides cited.

Official

The manufacturer's own manual, support FAQ, getting-started articles and firmware release notes. The strongest source available.

Retail

Authorized dealer spec sheets. Used mainly for electrical specifications manufacturers don't publish directly, such as jack impedances.

Review

Professional reviews, used for measured observations and for criticism that marketing copy omits.

Community

Owner reports, mostly from manufacturer-run forums. Used for real-world gotchas and corroboration, never as the sole basis for a technical claim.

Our reading

Our own interpretation, flagged as such. The biggest example is the Nano Cortex factory capture decoder. Neural DSP never uses real brand names, so each mapping is an informed guess with its own confidence level.

Unverified

Something we could not confirm from any source, or where sources disagree. Shown with a marker.

The Helix Rack guide shipped saying it was 2U. It is 3U. The figure was not in the manual or the cheat sheet it was cited to. Neither states any dimensions, so the number had been invented and given a real-looking source. A reader caught it.

The sourcing check confirms that a citation exists, not that the citation says the thing. So there is now an editorial rule: a number describing physical hardware is stated only if it can be pointed at in a document. Where a manufacturer publishes no dimensions, as Fractal do not, the guides give none.

Within a family these devices mostly share a sound engine, so choosing between them comes down to a handful of lines. Each guide covers only its own modeler, so the comparisons are separate pages, built from the same sourced data.

If you own the gear and something here is wrong, email us and it gets fixed. Each guide should stay true as firmware moves.