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SetupGearGuide

FabFilter Pro-MB

FabFilterprocritical fields covered· 3/3 detail specs sourced
FabFilter Pro-MB

Pro-MB is FabFilter's pro-tier dynamic multiband processor, handling both compression and expansion on frequency-targeted bands for surgical mix and master cleanup. It installs as VST3, AU, or AAX on Windows and macOS. Reach for it when a problem lives in a specific frequency range; for broad single-band glue across a whole bus, the Pro-C 3 is the more direct tool.

Scores

Breakdown
Overall81±3

Caliber-forward blend — tier caliber + within-tier price rank 30%, value 25%, confidence 20%, compatibility 15%, upgrade path 10% — renormalized over applicable dimensions.

Beginner Friendliness54
Compatibility84
Confidence82
Pro Readiness82
Upgrade Path87
Value92

The ± band on the overall score reflects sourcing confidence — wider when fewer specs are verified.

How each score is computed: our scoring methodology.

Specifications

SpecValueVerification
plugin formatsVST3, au, AAXSourced
plugin typecompressorSourced
os supportwindows, macosSourced

3/3 detail specs sourced. Amber rows are flagged for verification — we show them as reported, not confirmed.

Verdict

Best for

  • Dynamic multiband compression/expansion
  • Frequency-targeted mix/master cleanup

Who should skip this

  • Single-band glue-comp needs (use Pro-C 3)

Where to buy

List price $199

Prices are a guide and can change — confirm the current price on the retailer's site before buying.

Check price on Sweetwater
≈ $199list price

Prices last checked Jun 13, 2026 — retailer prices change often, so click through for the current price.

Some links may be affiliate links — we may earn a commission at no extra cost to you; rankings are never influenced by it.

Platform support

WindowsfullmacOSfull

Standards

Form factors & standards — interchangeable across compatible builds, not a platform lock-in.

AAX (native)Audio Units (AU) (native)VST3 (native)

Compatibility

Built around AAX, Audio Units (AU), VST3. Make sure the rest of your build uses the same platform before you buy — mismatched sockets, mounts or standards are the most common return reason. Check it in the builder →

Upgrade path

A top-tier plugin — there's little to upgrade to within the category.