Air-G Plugin Collection

Air-G Plugins Collection is a collection of VST3 audio plugins built on the open source work of Airwindows, Chris Johnson's ongoing project that has been releasing some of the most respected free DSP algorithms in the audio world.

The collection started from a simple idea: take some of those algorithms and present them with a custom graphical interface that makes daily work more comfortable and visual. Not to replace or improve on Chris's code, but to build on it: adding meters, displays, presets, and complementary controls that expand the possible uses without changing the underlying sound. The simplicity and lightness that characterize Airwindows are the starting point and the guide behind every design decision.

Depending on the tool, each plugin adds some combination of real-time level and gain reduction meters, interactive displays showing the actual frequency response, presets organized by instrument and use case, M/S processing, parallel compression controls, DAW tempo sync, sidechain filters, animations that reflect the state of the processing, and A/B comparison controls. All designed to make the Airwindows sound easier to explore and integrate into a real workflow.

The collection covers five areas:

Compression and dynamics: four compressors with distinct personalities — Pop! for transients and punch, Pulse for gluing buses and full mixes, Velvet for soft cohesion and spatial depth, Volt for the bus with a range that goes from transparency to envelope distortion. All four have a Mini version: same engine, compact 500-series rack module-style interface.

Clipper and de-esser: Clip combines two clipping modes in a single plugin with Delta monitoring. Dess detects sibilance by waveform shape rather than frequency targeting, with unusual precision on vocals and bright material.

Equalization: EaseQ is a four-band EQ with wide, musical Bezier curves, an interactive display, and an AIR button. Prism is a six-band graphic EQ with fixed frequencies, strong inter-band isolation, and draggable nodes.

Tape saturation and time effects: Tape is the full tape emulation, with head bump, flutter, three-band EQ, and 48 presets. Taped is the focused saturator, warmth and high-frequency compression with M/S processing. Taped Mini is its compact version. Echoes is the varispeed tape delay with DAW tempo sync and an HPF in the feedback loop. Mods brings four modulators (Chorus, AutoPan, Tremolo, Vibrato) into a single selector.

Reverb: Spaces brings together 16 reverbs from Airwindows' k-series in a single plugin: rooms, halls, plates, chambers, and imaginary spaces, with Pre Delay and HPF always available and four memory slots for instant comparison.

Every plugin comes with a manual in both Spanish and English, written in musical language without technical jargon.

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Thanks to Chris Johnson for making his work public and accessible. Air-G Audio exists because Airwindows exists. The Airwindows code used in this collection is published under the MIT License.

Air-G Plugins Collection is free. You can download it without paying anything, following the same open philosophy that runs through all of Chris's work. If the collection is useful to you in your music, a contribution is always welcome. Chris Johnson's Patreon is also worth knowing about: it's the most direct way to support the Airwindows project and the work that makes plugins like this one possible. patreon.com/airwindows

The complete bundle is available for Windows, Linux and macOS.

*macOS note: the plugin is not signed with an Apple developer certificate, so Gatekeeper may block it on first use. The "Open Anyway" option in System Settings does not work reliably for VST3 plugins. The correct fix requires Terminal: 1. Open Terminal (Applications > Utilities > Terminal). 2. Type: sudo xattr -rd com.apple.quarantine (leave a space at the end, do not press Enter yet). 3. Open Finder, navigate to /Library/Audio/Plug-Ins/VST3/ and drag the plugin's .vst3 file into the Terminal window. The path fills in automatically. 4. Press Enter and type your admin password when prompted (it will not be visible). Press Enter again. 5. Rescan your plugin folder in your DAW. The plugin should now appear.