Available for download, FabFilter Pro-Q 3 represents the third iteration of the company's well-regarded equalizer. Many features remain true to the version 2. The familiar and intuitive GUI with 24 clickable bands hasn't been changed, for example.
However, Pro-Q 3 offers new features, such as streamlined EQ-matching with other instances of Pro-Q 3, per-band M-S or L-R stereo processing, support for surround sound up to 7.1.2, and a new Dynamic EQ mode.
Dynamic EQ can be implemented on any bell or shelf filter. You can use this mode to compress or expand a frequency band based on the strength of the incoming signal, much like a multiband compressor. Attack and release are handled under the hood. You're given an intuitive range control to handle the degree of dynamics-processing, though the threshold can be set manually if need be. With dynamic mode, you can use the Pro-Q 3 while EQing the rest of the signal in a more traditional fashion.
Pro-Q 2 provided EQ matching via the sidechain input. Pro-Q 3, however, takes EQ-matching a step further: now you can choose any other instance of Pro-Q 3 in your mix and compare it to the source audio instantaneously. You'll also note that the plug-in shades any possible conflicts in a reddish hue. This helps you identify where, for example, a kick and a bass might be competing for the same slice of the frequency spectrum.
Stereo functionality has also been updated. In previous iterations, you could tweak the left and right channels independently, or switch the whole plug-in into mid-side mode for M-S processing. In Pro-Q 3, this option has been implemented on a per-band basis.
This is particularly useful for mastering engineers, as they no longer need to load multiple instances of the plug-in for left/right or mid-side processing. If you need to filter the lows out of the sides, notch out some resonance from the middle, and attenuate a harsh crash cymbal on the left of a mix, you can do that all in one instance of the plug-in.
This per-band processing extends beyond stereo implementations into surround sound applications up to 7.1.2 (Dolby Atmos). You can select individual channels or grab selectable groups, all on a per-band basis.
Some aspects of previous versions have been improved, such as the Spectrum Analyzer, the Spectrum Grab function, MIDI learn, and the filter shapes themselves. Other features, such as selectable display ranges, intelligent solo mode, adjustable linear phase latency modes, zero latenc and natural phase modes, and the polarity inversion selector have been left alone. The plug-in is compatible with Mac and Windows. It can operate in AU, VST, AudioSuite, and AAX formats.
- Selectable Dynamic EQ mode for all bands, available in bell and shelf shapes, and capable of using any slope setting
- Ultrasteep yet musical Brickwall slope setting for LP and HP filters
- Full surround support up to Dolby Atmos 7.1.2, with intelligent speaker selection
- External spectrum visualization from any other Pro-Q 3 instance, including visual collision detection for identifying any conflicting frequency issues
- Per-band mid/side or left/right processing, so you can EQ the mid, side, left, or right signals separately within one instance of the plug-in
- Flat Tilt filter shape, a flat tilting correction curve over the audible frequency spectrum
- Retina interface with large interactive EQ display, multiband selection, and editing for maximum ease of use and efficiency
- Improved filter shapes, including Bell, Notch, High/Low Shelf, High/Low Cut, Band Pass, Tilt Shelf, and Flat Tilt
- EQ Match feature now matches the spectrum of any selected Pro-Q 3 instance, as well as external signals input into the sidechain
- Improvements to the spectrum analyzer, including Pre-EQ, Post-EQ, external spectrum visualization, adjustable range, speed, resolution, tilt, freeze and collision detection
- Improvements to spectrum grab: grab and adjust a peak in the real-time spectrum analyzer
- Pro-Q now supports stereo, mono, and surround channel layouts (up to Dolby Atmos 7.1.2)
- MIDI Learn with option to control the currently active band
- Up to 24 EQ bands
- Universal filter slope support for all filter types, up to 96 dB/oct
- Auto Gain and Gain Scale
- Optional piano roll display to quantize EQ frequencies to musical notes
- Different display ranges: 3 and 6 dB ranges for mastering, 12 and 30 dB for mixing
- Intelligent solo mode makes it easy to find problem frequencies and hear the effect of a band
- Phase Invert option to change polarity
- Large output level meter with peak level readout
- Operates in zero latency mode, linear phase mode with adjustable latency, or Natural Phase mode
- GPU-powered graphics acceleration
- Double-click text entry of parameter values
- Different interface sizes and additional Full Screen mode
- Pro-Q 3 uses very little CPU and memory, so you can use hundreds of instances in a session
- Supports common Pro Tools hardware control surfaces
- Undo/redo and A/B comparison
- Sample-accurate automation of all parameters
- Extensive help file with interactive help hints
- Available in VST, VST3, Audio Units, AAX Native, and AudioSuite formats (64-bit and 32-bit)