One-liner
13x AURORA is a free dynamic EQ with a built-in Smart Ops assistant.
13x AURORA
A free dynamic EQ with a built-in Smart Ops assistant.
Press kit · 1.6.1
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Short description
AURORA is a free dynamic parametric EQ from 13x.audio. Shape a mix with up to 24 bands, per-band dynamics, mid/side control and three phase modes. Its Smart Ops assistant helps match references, tame resonances and unmask tracks, leaving every change editable. No account or licence key is required.
Long description
AURORA is a free dynamic parametric EQ from 13x.audio for mixing, mastering and everyday cleanup. Its live spectrum lets producers see what they hear and shape it with up to 24 editable bands. Per-band dynamics can respond to problem frequencies as they appear, while mid/side and left/right placement provide control over the stereo image. The built-in Smart Ops assistant can match a reference spectrum, find resonances, de-ess, bracket a signal with high- and low-cut filters, and unmask one track against another. Each action produces bands that remain editable, keeping the final decisions with the producer. Zero-latency, Natural and Linear phase modes cover different tracking and mixing needs. Clean, Subtle and Warm character options provide additional tonal choices. The plugin works offline with no account, licence key or trial limit. Download the format for your platform and load it in a compatible DAW; platform requirements are listed in the fact sheet below.
About 13x.audio
13x.audio develops original audio instruments and effects for producers and mixing engineers in every genre. Its products share an interface language inspired by hardware: direct controls, readable displays and a focus on the sound. AURORA, the free dynamic EQ with a built-in Smart Ops assistant, is available without an account or licence key. Product information, downloads and support are available at 13x.audio.
Fact sheet
| Product | 13x AURORA |
|---|---|
| Developer | 13x.audio |
| Current version | 1.6.1 |
| Release date | 5 October 2026 — First platform release; platform dates are listed below (UTC). |
| Price | Free |
| Windows | 1.6.1 · 5 October 2026 · VST3 / CLAP · Windows 10/11 · x86_64 |
| macOS | 1.6.1 · 5 October 2026 · VST3 / AU / CLAP · macOS 11+ · Apple Silicon & Intel (universal) |
| Linux | 1.6.1 · 5 October 2026 · VST3 / CLAP / LV2 · Linux · glibc 2.35+ · x86_64 |
| CPU | Modern 64-bit CPU — Apple Silicon, Intel or AMD |
| Memory | 4 GB RAM minimum · 8 GB recommended |
| Plug-in host | 64-bit DAW supporting one of the plugin formats offered for its platform |
| Latency | Zero in Zero-latency / Natural · reported PDC in Linear |
| Sample rates | 44.1–192 kHz |
| Disk | macOS: about 45 MB for all formats |
| Software licence | Personal and commercial music production under the 13x.audio EULA. The plugin is licensed, not sold; redistribution of the software is restricted. See the full EULA. |
| Product URL | https://13x.audio/products/aurora |
| Download URL | https://13x.audio/products/aurora#get |
What’s new in 1.6.1
Official release notes (English).
An urgent fix, thanks to a user who sent a screen recording. Please update.
- Changing the slope of a Low Cut or High Cut no longer causes loud peaks. Switching the slope while your track played, for example from 24 to 30 dB/oct, could make Aurora's output jump to far above the level of your music for a moment. We measured peaks up to +25 dBFS from a signal at -12 dBFS, loud enough to hurt speakers and ears. Aurora 1.5 behaved the same way. Now the new slope fades in smoothly once it is ready, a fraction of a second after you pick it.
- Other changes during playback are smooth now, too. The same kind of jump could happen, less strongly, when you:
- changed a band's filter type or its stereo placement (Stereo, Left, Right, Mid, Side);
- switched between Zero Latency or Natural Phase and Linear Phase;
- changed a frequency in one big step, for example by typing a value, loading a preset or switching A/B;
- changed the Character setting (Clean, Subtle, Warm), also through a preset or A/B.
All of these now fade over to the new setting. Switching a band on or off fades too.
- Full screen opens in front of FL Studio's plug-in window. On a Mac, the full-screen spectrum could open behind FL Studio's floating plug-in window. It now opens in front.
- Safety net. If a broken value ever arrives from the host or appears inside Aurora, it is silenced instead of being passed on, and Aurora carries on playing normally.
Good to know: Some changes take effect a moment after you make them, because Aurora lets the new setting settle before it fades it in. That is usually a few hundredths of a second, and up to about a second for a Brickwall cut at a very low frequency.
Your sound doesn't change: with settings that stay as they are, Aurora 1.6.1 sounds exactly like 1.6.0. Projects and presets load unchanged.
New to 1.6? See what's new: https://13x.audio/products/aurora/1.6
macOS: universal VST3, AU and CLAP, Developer ID signed and Apple notarized. Windows: 64-bit VST3 and CLAP in a zip, with Install Aurora.cmd. Linux: x86_64 VST3, CLAP and LV2 in a .tar.gz with a per-user install script; glibc 2.35 or later.
What it does for your mix
- Shape tone directly on a live spectrum with up to 24 editable EQ bands.
- Use dynamic bands to control frequencies when they become a problem.
- Match a reference, tame resonances or de-ess with Smart Ops, then refine the resulting bands yourself.
- Unmask one track against another to give competing sounds room in the mix.
- Adjust the centre and sides, or left and right channels, with per-band placement.
- Choose zero-latency, Natural or Linear phase processing for the task at hand.
- Keep a clean signal path or explore Subtle and Warm character settings.
Media assets
Approved files appear here as soon as they are supplied. Until then, each slot shows the requested file and dimensions.
Download text press kit (.zip)Text kit available now. Media placeholders are not images and are not included as media files.
TODO — asset not supplied
aurora-ui-dark.png
Plugin UI — dark
3472 × 2112 · PNG · File size pending
Full window, no crop; show version and active EQ bands.
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aurora-ui-light.png
Plugin UI — light (if supported)
3472 × 2112 · PNG · File size pending
TODO: confirm whether a light theme exists; supply only if it is a real shipping theme.
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aurora-in-daw.png
AURORA in a DAW
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Show the plugin in a real session; remove personal names and third-party artwork.
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13x-audio-logo-light.svg
Light logo / SVG
1200 × 300 · SVG · File size pending
Transparent light artwork for dark backgrounds; use a 1200 × 300 viewBox.
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13x-audio-logo-dark.svg
Dark logo / SVG
1200 × 300 · SVG · File size pending
Transparent dark artwork for light backgrounds; use a 1200 × 300 viewBox.
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13x-audio-logo-light.png
Light logo / PNG
2400 × 600 · PNG · File size pending
Transparent light artwork for dark backgrounds.
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13x-audio-logo-dark.png
Dark logo / PNG
2400 × 600 · PNG · File size pending
Transparent dark artwork for light backgrounds.
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aurora-icon.png
Product icon
1024 × 1024 · PNG · File size pending
Square thumbnail for listings; keep important content away from the edges.
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aurora-banner.png
Article header
2400 × 1350 · PNG · File size pending
Wide hero for article headers; no invented badges or review quotes.
Video demo
Recorded with the Aurora 1.4 editor; the screenshots show the current version. Free to embed in coverage.
YouTube loads only after you press play.
Press contact
TODO — confirm the named press contact and press email. The general enquiry address below is already published on the website.
- General enquiries
- hello@13x.audio
- Website
- 13x.audio
- Social profiles
- TODO — supply official social-profile URLs. Generic platform homepages are not contact links.