FabFilter Pro-Q 4 is a top-quality EQ plug-in with up to 24 bands, perfect analog modeling, dynamic EQ, linear phase processing, and a gorgeous interface with unrivalled ease of use. Accelerate your mixing with new features such as EQ Sketch and access to other Pro-Q 4 instances from a single plug-in interface. Spectral EQ and new Character modes make Pro-Q 4 more sonically versatile, while the improved, intelligent EQ display ensures Pro-Q 4 is an absolute joy to use.

The Pro-Q 4 app filters the microphone input and plays it back in real-time. To use Pro-Q 4 as a plug-in, you need an AUv3-compatible host app like Logic Pro, AUM or Cubasis. Pro-Q 4 will appear in the list of Audio Unit extensions for effect plug-ins in the host app.

Key features:

- Professional mastering-grade EQ plugin with exceptional sound quality
- Up to 24 bands with a huge range of filter types
- (New) Use the Instance list to view and control any other Pro-Q 4 instance in your session
- (New) EQ Sketch: just draw the desired EQ curve in one go to setup initial EQing
- (Improved) Dynamic EQ option for every band
- (New) Advanced Spectral dynamics processing, to effectively and precisely treat problem frequencies
- (New) Gentle and Warm Character modes to add analog warmth to your mixes
- (Improved) Filter shapes: Bell, Notch, High/Low Shelf, High/Low Cut, Band Pass, Tilt Shelf, Flat Tilt, All Pass (New)
- (Improved) Continuous slope setting up to 96 dB/oct for all filter types and ultra-steep 'Brickwall' slope setting for LP and HP filters
- (New) Copy and paste EQ bands or presets between plug-in instances
- Per-band Stereo, Left, Right, Mid or Side mode
- Zero Latency, Natural Phase and Linear Phase processing modes
- Powerful real-time spectrum analyzer
- Spectrum Grab: grab and adjust a peak directly in the spectrum analyzer (Improved)
- EQ Match for imposing the tonal characteristics of one signal on another
- Extremely efficient processing and low memory usage
- Intelligent multiband selection and editing
- Intelligent band solo mode
- Piano Display switches the frequency scale to musical note values
- Separate Mastering (3/6dB) and Mixing (12/30dB) display ranges
- Save, restore and organize presets
- Optional Gain-Q interaction
- Auto Gain and Gain Scale
- Phase Invert option to change polarity
- Large output level meter with peak level readout
- MIDI Learn with option to control the currently active band
- Undo/redo and A/B comparison

"Pro-Q was already one of the most
powerful and intuitive EQ plug-ins on the market, and version 4 represents a big step forward in both respects."
— Sound On Sound magazine

"With its spot-on sound and wonderful interface, Pro-Q is up there with the best EQs money can buy."
— MusicRadar