FabFilter Pro-Q 4 is a professional equalizer plug-in for mixing and mastering, combining transparent sound, dynamic and spectral processing, analog-style character modes, and a fast visual workflow.
FabFilter Pro-Q 4 Key Features
- Up to 24 independently configurable EQ bands
- Zero Latency, Natural Phase, and Linear Phase processing modes
- Dynamic EQ with adjustable attack, release, and side-chain filtering
- Spectral Dynamics for precise control of problematic frequencies
- EQ Sketch for drawing complete EQ curves in one gesture
- Clean, Subtle, and Warm character modes
- Per-band stereo, left, right, mid, and side processing
- Instance List for viewing and controlling compatible FabFilter plug-ins across a session
- EQ Match, Spectrum Grab, collision detection, and intelligent band solo
- Surround and immersive audio support up to Dolby Atmos 9.1.6
- Customizable real-time spectrum analyzer
- Resizable, GPU-accelerated interface with full-screen mode
Precise Dynamic and Spectral Control
FabFilter Pro-Q 4 combines conventional equalization with advanced dynamic processing. Any suitable bell or shelf band can respond to the incoming signal, while adjustable attack, release, and side-chain filtering provide detailed control over its behavior. Spectral Dynamics processes only the frequencies within a selected band that cross the threshold, helping reduce harshness and resonances without unnecessarily changing the surrounding audio.
Fast Visual EQ Workflow
The interactive display makes it easy to create, select, and edit multiple bands directly on the spectrum. EQ Sketch allows users to draw an approximate frequency curve in one movement, automatically creating the required filters as a starting point. Spectrum Grab, intelligent solo, frequency collision detection, and a musical piano display further simplify the process of locating and correcting tonal issues.
Transparent Processing or Analog Character
Three character modes provide different approaches to sound shaping. Clean mode preserves the transparent response associated with Pro-Q, Subtle mode adds gentle transformer-style saturation, and Warm mode introduces a more noticeable tube-style character. Users can also choose between Zero Latency, Natural Phase, and high-precision Linear Phase processing to suit recording, mixing, and mastering tasks.
Efficient Control Across Complex Sessions
The Instance List provides an overview of compatible FabFilter plug-ins used throughout a project, including Pro-Q 4 instances. Engineers can access and adjust EQ settings without repeatedly opening separate plug-in windows. Support for per-band mid/side processing, surround channels, and Dolby Atmos configurations also makes the equalizer suitable for detailed stereo and immersive audio work.
Who Will Like FabFilter Pro-Q 4
- Mixing engineers who need fast surgical and corrective equalization
- Mastering engineers looking for precise, transparent frequency control
- Music producers working with vocals, instruments, buses, and full mixes
- Sound designers who want dynamic and spectral processing tools
- Post-production professionals working with surround or immersive audio
- Experienced users seeking a flexible EQ with detailed visual feedback
- Home studio creators who value an intuitive and efficient workflow
