AI online mastering engine built by Grammy-winning engineers, with a free first master.
VST3not supportedAUnot supportedAAXnot supportedCLAPnot supportedWINnot supportedMACnot supportedLNXnot supported+ Web
Checked September 2026
eMastered is best for producers who want a free instant AI master before committing to a paid plan; FabFilter Pro-L 2 is best for transparent, loud mastering-grade limiting. eMastered starts at an unpublished price and FabFilter Pro-L 2 at $199 one-time.

AI online mastering engine built by Grammy-winning engineers, with a free first master.
Loudness limiter with eight limiting algorithms and true peak limiting for mastering.
| eMastered | FabFilter Pro-L 2 | |
|---|---|---|
| Best for | producers who want a free instant AI master before committing to a paid plan | transparent, loud mastering-grade limiting |
| Starting price | Not public | $199 one-time |
| Free version | No | No |
| Free trial | Yes | Yes |
| Formats | Web app | VST3, AU, AAX, CLAP |
| OS | Web | Windows, macOS |
| Key features | Free first master to try the engine, eMastered Studio subscription bundling mastering, distribution, and stem separation, AI-powered mastering engine created by Grammy-winning engineers, Used to master 30M+ tracks by 3M+ artists (per vendor) | Eight limiting algorithms, True peak limiting with loudness metering (EBU R128, ITU-R BS.1770-4, ATSC A/85), Up to 32x linear-phase oversampling, Dolby Atmos support up to 9.1.6, External sidechain triggering |
| Developer | eMastered | FabFilter |