How to Install Plugins in Logic Pro: AU Setup
Install third-party Audio Units in Logic Pro, verify the component or extension, confirm Plug-in Manager validation, and load it in the correct slot.
To install plugins in Logic Pro for Mac, use the developer’s Audio Units build. Logic has no internal “install plug-in” button: download the Mac installer from the developer, include the AU or Audio Units option, finish any license authorization, then reopen Logic. Check the new plug-in in Logic Pro > Settings > Plug-in Manager before you try to use it.
If the download offers VST, VST3, AAX and AU, Logic needs AU. Installing only VST3 will not make the plug-in appear in Logic. This guide covers Logic Pro for Mac; the old name “Logic Pro X” still appears in older documentation and search results, but the installation route is the same Audio Unit workflow.
Last verified: August 24, 2026, against Apple’s current Logic Pro User Guide, the Logic Pro 12.3.1 release notes and Apple Support guidance.
Choose the right plug-in format before downloading
A vendor may package several formats in one installer. Select the Mac build that the developer says is compatible with your macOS version, your Mac processor and the current Logic Pro release. Then include AU in the format list.
| Format in the installer | Will Logic Pro for Mac load it? | What to do |
|---|---|---|
| AU / Audio Units / AUv2 | Yes | Install this format for Logic. |
| AUv3 / Audio Unit Extension | Yes, when the extension supports Mac | Install the app or extension as the developer instructs. |
| VST or VST3 | No, not directly | Choose AU as well; VST3 alone is for other hosts. |
| AAX | No | This is not the Logic plug-in format. |
| Standalone app | Not by itself | Confirm the package also includes an AU component or AUv3 extension. |
Do not assume that a plug-in is compatible because the product page says “Mac.” Check the developer’s supported macOS versions, Logic support, Apple-silicon status and license-manager requirements before installing it. Apple likewise tells users to follow the developer’s instructions and confirm compatibility with the latest Logic version in its current Audio Units guide.
How to install a plug-in in Logic Pro
- Quit Logic Pro. Finish the installation before reopening the app.
- Download the installer from the plug-in developer or its authorized account page. Avoid repackaged installers from download sites.
- Choose the Mac version and include AU or Audio Units. You can omit formats you do not use unless another DAW on the Mac needs them.
- Run the vendor installer. Keep its default AU destination unless the developer documents a different method. Complete any required sign-in, serial, license-manager or hardware authorization.
- Reopen Logic Pro and let validation finish. Do not force-quit the app while the new Audio Unit is being scanned.
- Open Logic Pro > Settings > Plug-in Manager. Search by plug-in or manufacturer and confirm that the Compatibility column has a checkmark.
- Load it from the correct slot. Use an Audio Effect slot for processors such as EQ, compression, reverb and delay; use the Instrument slot for a synth, sampler or drum instrument.
- Test and save. Pass audio through an effect or play notes into an instrument, change one obvious control, save a small test project, close it and reopen it to confirm the plug-in and its setting recall correctly.
The final test matters. A plug-in can appear in the menu yet still be unauthorized, fail to produce sound or forget its state. Finding that in a disposable project is safer than discovering it inside an important mix.
If the installer gives you a .component file
Most commercial plug-ins should be installed with the developer’s package because it may also place presets, support files and license components. Use manual placement only when the developer supplies a standalone .component file and explicitly supports that method.
Apple documents two Audio Unit component folders:
/Library/Audio/Plug-Ins/Components: the system Library, normally used when the plug-in should be available to users of that Mac.~/Library/Audio/Plug-Ins/Components: the current user’s Library. The tilde means your home folder.
In Finder, choose Go > Go to Folder, paste the exact path, and move the vendor-supplied component there. Reopen Logic, then check Plug-in Manager. Apple’s Audio Unit folder reference confirms both locations and also notes that Logic’s built-in effects and instruments do not appear in these folders.
AUv3 works differently: Apple’s current guide says Audio Unit Extensions are installed in the Applications folder, while AUv2 plug-ins use the Components directory. Do not drag an AUv3 app bundle into the Components folder.
Confirm that Logic validated the plug-in
Open Logic Pro > Settings > Plug-in Manager. Select the manufacturer on the left or search for the plug-in name. In the current manager, a checkmark in Compatibility means Logic found no issue during its scan; not compatible means the scan found a problem.
Also check that Hide and Ignore are not selected. Apple distinguishes them: Hide removes a plug-in from the channel-strip menu but still scans it, while Ignore prevents it from appearing and being scanned.
Do not click Full Audio Unit Reset as part of a normal installation. If one installed entry needs another scan, select that entry and use Reset & Rescan Selection. If the plug-in is absent, unauthorized or repeatedly fails validation, follow the narrower Logic Pro missing plug-in diagnostic instead of deleting caches or bypassing macOS security at random.
Load an effect or instrument in the right place
Installation is complete only when you can load the Audio Unit on the correct kind of channel strip:
- Audio effects process a signal that already exists. Click an empty Audio Effect slot, open Audio Units, choose the manufacturer, then the plug-in.
- Software instruments create sound from MIDI. Create or select a Software Instrument track, click its Instrument slot, then choose the Audio Unit instrument.
- MIDI effects belong in a MIDI Effect slot only when the developer supplies that type of Audio Unit.
A synth will not appear in an audio-effect menu, and a compressor will not appear in the Instrument slot. This is a menu-location issue, not an installation failure. Apple’s plug-in slot reference uses the same Audio Effect and Instrument distinction.
Apple silicon, Intel plug-ins and Rosetta
Prefer a current Apple-silicon or universal build when the developer offers one. If the only supported build is an Intel Audio Unit, Apple says an Apple-silicon Mac needs Rosetta installed before Logic can recognize that plug-in. That does not mean you should run Logic itself with “Open using Rosetta” for every older plug-in.
Apple says Logic generally should not need to run under Rosetta; some third-party ARA software is a separate exception. Check the developer’s current compatibility page first, then use Apple’s Apple-silicon Audio Unit guidance if the supported plug-in specifically requires Rosetta.
If the new plug-in does not appear
Keep the first checks narrow:
- Confirm that the AU build was installed rather than a VST3-only or AAX-only build.
- Check the Audio Effect slot for an effect and the Instrument slot for an instrument.
- Search the correct manufacturer in Plug-in Manager.
- Finish the vendor’s authorization and confirm current macOS and Logic compatibility.
- Restart the Mac once. Apple includes a restart as the first check for a recently installed plug-in that is missing.
- If the entry exists but failed, select only that plug-in and use Reset & Rescan Selection.
Stop there before broad resets. The complete missing Audio Unit troubleshooting path covers validation states, authorization, Full Audio Unit Reset, startup isolation and cache removal in the order that limits collateral damage.
Logic Pro plug-in installation FAQ
Can Logic Pro use VST or VST3 plug-ins?
Logic Pro for Mac does not load VST or VST3 directly. Install the Audio Units version supplied by the same developer. A multi-format installer can place AU for Logic and VST3 for another DAW on the same Mac.
Where is the Logic Pro plug-in folder?
Third-party AUv2 components can be in /Library/Audio/Plug-Ins/Components or ~/Library/Audio/Plug-Ins/Components. AUv3 Audio Unit Extensions are installed in Applications. Logic’s built-in effects and instruments are not stored as removable files in those third-party Components folders.
Do I need to restart Logic or the Mac after installing a plug-in?
Finish the installation with Logic closed, then reopen it so the new Audio Unit can be validated. A full Mac restart is not required after every successful installation, but Apple recommends restarting as the first check when a recently installed plug-in does not appear.
Why does my synth not appear in the Audio Effect menu?
A synth is an instrument, so load it on a Software Instrument track from the Instrument slot. Audio Effect slots list processors such as EQ, compression, saturation, reverb and delay.
Should I put a .component file in the system Library or user Library?
Follow the developer’s supported installation method. When manual placement is explicitly supported, /Library/Audio/Plug-Ins/Components makes the component available at the system level, while ~/Library/Audio/Plug-Ins/Components is inside the current user’s home Library. Do not manually split a vendor package unless its documentation tells you to.
How do I know whether Logic accepted the plug-in?
Open Logic Pro > Settings > Plug-in Manager, find the manufacturer or plug-in, and check Compatibility. A checkmark means Logic’s scan found no issue. Then load the plug-in in a small test project, pass audio or MIDI through it, save, close and reopen the project to confirm recall.
If this is your first third-party Audio Unit, the Logic Pro beginner project provides a clean test session with audio and software-instrument tracks already explained. The ordered Logic Pro tutorials hub connects installation to recording, editing, mixing and export without turning this page into a generic plug-in list.
