Yes. Your email gets you the download and release notes, nothing else. No account, no license file.

Does it touch my audio?

Only when you click SET. Level Box applies a single static gain offset. No EQ, no compression, no coloration.

What about Intel Macs or Windows?

Intel and Apple Silicon are both covered; the binary is universal. Windows isn't here yet; write to hello@adrestia-audio.com. Demand decides the roadmap.

Where should it sit in the chain?

First. Gain staging works best before your compressors and saturators, so they see the level they were designed for.

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Level Box

Measure, target, commit

Hit your target level in one click. Level Box measures your signal, calculates the gain offset needed to hit your target, and commits it. No guesswork, no riding faders.

Download Level Box

What's new in v0.1.3

Free · Available · AU / VST3 · v0.1.3 · macOS (Universal, Apple Silicon & Intel)

Details

Features

RMS and Peak measurement modes
Preset targets: -18 / -20 (RMS), -10 / -6 (Peak)
Confidence indicator: Measuring, Settling, Stable, Committed
One-click gain commit with clip warning
Mono and stereo
Full state recall (DAW session save/restore)
Hardened runtime, notarized, sandbox-safe

Getting set up

Install

Download the .pkg installer below.
Run it. AU and VST3 land in /Library/Audio/Plug-Ins automatically.
Restart your DAW, or rescan your plugins.
Insert Level Box on a track, usually first in the chain.

You'll need

macOS 11 or later, Apple Silicon or Intel (universal binary)
A DAW that hosts AU or VST3 (Logic, Live, Cubase, Reaper, and friends)
Notarized by Apple, no Gatekeeper workarounds needed

Questions

FAQ

Is it really free?: Yes. Your email gets you the download and release notes, nothing else. No account, no license file.
Does it touch my audio?: Only when you click SET. Level Box applies a single static gain offset. No EQ, no compression, no coloration.
What about Intel Macs or Windows?: Intel and Apple Silicon are both covered; the binary is universal. Windows isn't here yet; write to hello@adrestia-audio.com. Demand decides the roadmap.
Where should it sit in the chain?: First. Gain staging works best before your compressors and saturators, so they see the level they were designed for.

Changelog

Versions

v0.1.3October 10, 2026Latest

Andrestia Audio is now Adrestia Audio. New logo and name in the header and footer, in the plugin metadata, and at adrestia-audio.com. Bundle identifiers are unchanged, so existing sessions keep loading; the remembered window size resets once.

v0.1.2September 23, 2026

Resizable window. Drag the corner, or click the size badge in the footer for 100-200% presets. The size is remembered per instance and as a global default for new ones.
New Andrestia Audio logo in the header. The plugin name moves to the footer.

v0.1.1September 22, 2026

Renamed from AAGS (Gain Staging) to Level Box. Existing sessions keep loading; only the name changed.
Fixes a bug where the plugin would not load on macOS versions before 26. Now runs on macOS 11 and later.
Now runs on both Apple Silicon and Intel Macs.
Footer version label now reflects the installed build.

v0.1.0April 17, 2026

First public release.
RMS and Peak measurement with preset targets.
One-click gain commit with clip warning.
AU, VST3, and Standalone for macOS (Apple Silicon).

Level Box. Ready when you are.

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We'll send you updates when new versions ship. That's it.