FabFilter Pro-L 2 vs Soren

FabFilter Pro-L 2 is a true-peak limiter plug-in for mixing and mastering, with tools for loudness control and transparent sound. It includes eight limiting algorithms and precise true-peak meters. Loudness metering supports EBU R128, ITU-R BS.1770-4, ATSC A/85, and TR-B32, while linear-phase oversampling is available up to 32x. For immersive and surround audio, it supports formats up to Dolby Atmos 9.1.6 with flexible channel linking. Processing options include adjustable look-ahead, attack, and release, external side-chain triggering, an optional DC offset filter, and dithering with three noise-shaping algorithms. FabFilter lists VST, VST3, Audio Units, CLAP, AAX Native, and AudioSuite formats. Desktop requirements are Windows Vista through Windows 11, or macOS 10.13 or later on 64-bit Apple Silicon or Intel; both require a compatible plug-in host or Pro Tools. An iPad version is linked through the Apple App Store. FabFilter offers a fully functional 30-day trial that can be unlocked with a license key. Support includes help files, manuals, FAQs, a user forum, and email sales and technical support.

Soren is a standalone app for automated audio mastering, not a DAW plugin. Its Mix Agent analyzes mixes before mastering and suggests changes for tonal imbalance and resonances. Users can choose among 10 genre profiles and 27 curated Smart References, or upload a reference track for analysis of spectral balance, dynamics, and tonal qualities. Controls include spectral and stereo processing toggles, custom LUFS targeting, and safeguards against over-processing. Export formats are WAV at 44.1 or 48 kHz in 16 or 24 bit, and MP3 at 320 or 256 kbps, with three True Peak limiting options. Processing happens locally; the maker says internet access is not needed after initial online activation. Desktop requirements are macOS 12 or higher or Windows 10/11, with at least 8 GB RAM recommended. The page lists support for files up to 90 minutes on Apple Silicon M1 with 16 GB RAM, and says Soren is available for iPhone and iPad. A free trial is available, and pricing starts at €249.