Plugin comparison
Specs, price and the Dubspot Score, side by side — with our verdict on which effect to buy.
Independent score / workflow fit / buying signal
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Contenders
Effect / FabFilter
FabFilter Pro-C 2 is a professional stereo compressor plug-in with eight compression styles, side-chain EQ, and mid/side processing.
Effect / sonible
sonible smart:comp 2 is a spectro-dynamic compressor plugin that uses intelligent processing and automatic parametrization across audio bands.
Editorial analysis
FabFilter Pro-C 2 is a precision digital compressor built around visual feedback and manual control, while sonible smart:comp 2 is a spectro-dynamic compressor that analyzes thousands of frequency bands and sets itself up automatically. Producers compare them because both promise clean, do-anything dynamics, but they get there from opposite philosophies. The choice comes down to whether you want to drive the compressor or let it drive itself.
Decisive signal
The decisive split is architecture, and everything else follows from it. Pro-C 2 is a full-band compressor with eight styles, a side-chain EQ, and true mid/side, all clamped against a single threshold you shape by hand, so it does exactly what you tell it and shows you precisely what that is. smart:comp 2 splits the signal across more than 2,000 spectral bands and compresses only the regions that misbehave, catching sibilance, a 3 kHz snare spike, or a resonant bass note dynamically instead of statically. In practice Pro-C 2 is a scalpel you aim, whereas smart:comp 2 is an assistant that finds the problem for you. That means Pro-C 2 rewards engineers who already know what they want, and smart:comp 2 rewards anyone who wants the fix without building a multiband from scratch.
Choose FabFilter Pro-C 2 if
Choose Pro-C 2 if you want analytical, hands-on control with best-in-class gain-reduction metering across eight styles for everyday mix and master bus work.
Open plugin file →Choose sonible smart:comp 2 if
Choose smart:comp 2 if you want frequency-aware, self-configuring compression that dynamically tames harshness and resonances without opening a multiband editor.
Open plugin file →Buying verdict
Pro-C 2 is the stronger overall tool and scores higher (8.7 vs 8.1) because its metering, eight styles, and rock-solid transparency make it a trustworthy workhorse for mixing and mastering. smart:comp 2 wins on speed and specialization: for taming harshness and gluing a mix in seconds, its per-band intelligence solves problems Pro-C 2 makes you solve manually. Pro-C 2 also tends to be the pricier commitment, so the honest call is workflow-based rather than score-based, since these are complementary rather than interchangeable and many engineers keep both.
Technical matrix
| Signal | FabFilter Pro-C 2 | sonible smart:comp 2 |
|---|---|---|
| Price | — | — |
| Dubspot Score | 8.7 | 8.1 |
| Formats | VST, VST3, CLAP, AU (Audio Units), AAX Native, AudioSuite | VST, VST3, AU (Mac only), AAX |
| Compression styles | 8 styles (3 original v1 styles plus 5 new in v2: Clean, Classic, Opto, Vocal, Mastering, Bus, Punch, Pumping) | — |
| Oversampling | Up to 4x internal oversampling | — |
| Side chain | Side-chain EQ section plus external side-chain triggering | — |
| Stereo handling | Variable stereo linking and mid/side processing (mid-only, side-only, M>S, S>M) | — |
| Platforms | Windows and macOS, 32-bit and 64-bit hosts | — |
| Audition triggering | Audition Triggering option to hear which parts of the audio are triggering compression | — |
| Compression bands | — | More than 2000 spectral bands analyzed continuously |
| Operating systems | — | Windows 10+ (64-bit); macOS 10.12+ |
| CPU | — | Intel Core i5 or Apple M1 |
| RAM | — | 4 GB |
| Graphics | — | OpenGL Version 3.2+ |
| Authorization | — | Machine-based or iLok (USB dongle) |
Quick reference
smart:comp 2 is friendlier for beginners because its smart:learn button profiles the audio and sets a sensible starting point in seconds. Pro-C 2 demands more knowledge of attack, release, and knee, but its clear real-time display is arguably the best teaching tool in software once you want to understand what compression is actually doing.
They solve different problems, so neither truly replaces the other. Pro-C 2 is a broadband compressor for level control and glue, while smart:comp 2 corrects frequency-specific dynamic issues like sibilance and resonances. Many engineers use smart:comp 2 to clean up a source, then Pro-C 2 to shape its overall dynamics.
Pro-C 2 has the edge on aggressive material thanks to its Punch and Pumping styles and full manual control over transient shaping. smart:comp 2 can play it safe and smooth transients you wanted to keep, so for in-your-face drums or bass you may prefer Pro-C 2 or a dedicated FET or VCA emulation for attitude.
See the full plugin database for more comparisons.