FabFilter Pro-Q 4 is FabFilter’s equaliser plug-in, with up to 24 bands, dynamic EQ and spectral dynamics on every band, and linear and natural phase modes. It is for mixing and mastering engineers and producers who want precise, clean EQ, including immersive Dolby Atmos work. It runs on Windows and on macOS 10.13 or higher (Apple Silicon or Intel), inside a VST, VST3, AU, CLAP or AAX host.
What is FabFilter Pro-Q 4?
Pro-Q 4 is the current version of FabFilter’s EQ, released in December 2024 and now at version 4.13. It replaces Pro-Q 3: FabFilter lists Pro-Q 3 as a legacy plug-in, superseded by Pro-Q 4. If you are looking for FabFilter Pro-Q 3, Pro-Q 4 is the version to get today. Pro-Q 4 is also part of the FabFilter Total Bundle.
Key features
- Up to 24 EQ bands with bell, notch, shelf, cut, band pass, tilt and all pass shapes
- Dynamic EQ on all bands: attack and release, side-chain filtering and external triggering
- Spectral dynamics: treats only the problem frequencies within a band
- Immersive support for Dolby Atmos up to 9.1.6
- EQ Sketch: draw a whole EQ curve in one gesture
- Slopes up to 96 dB/oct, plus Brickwall low and high cut
- Zero latency, linear phase and Natural Phase modes, and Character modes for analog-style warmth
- Per-band mid/side or left/right processing
- EQ Match against another instance or an external signal
- Spectrum analyser with Spectrum Grab, Auto Gain and a piano roll display
- Instance List to see and control other Pro-Q 4 instances, plus Pro-C 3, Pro-DS and Pro-G
- Resizable, GPU-accelerated interface, MIDI Learn, undo/redo and A/B
Pro-Q 4 vs Pro-Q 3
Pro-Q 4 is the current version and the one FabFilter sells today. Pro-Q 3 is a previous version: FabFilter still keeps it up to date as a legacy plug-in, but it is superseded by Pro-Q 4. Pro-Q 4 brings spectral dynamics, full immersive support, EQ Sketch, Character modes and the Instance List.
System requirements
- Windows: Windows 11, 10, 8, 7 or Vista, 64-bit or 32-bit
- macOS: macOS 10.13 or higher, 64-bit only, on Apple Silicon or Intel
- Host: a VST 2/3, CLAP or AU host, or Pro Tools (AAX Native and AudioSuite)
- Download: under 30 MB on Mac, under 15 MB on Windows
Also from FabFilter: the FabFilter Twin 3 synth. Browse more EQ plug-ins or everything from FabFilter.

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