FabFilter Pro-Q 4

The Pro-Q 4 Upgrade requires ownership of a previous version of Pro-Q and will not function without an existing Pro-Q license.

FabFilter Pro-Q 4, the latest version of the widely popular and best selling EQ plug-in, brings exciting new features to enhance sound quality and workflow for engineers and producers. With Spectral Dynamics, the Instance List, EQ Sketch, Vintage Saturation, and more, Pro-Q 4 offers the highest possible sound quality and a complete feature set. The interface has been cleaned up with many new functionalities to help users achieve their desired sound quickly and easily:

EQ Sketch

Wondered if you could ever just draw the curves you'd
like? Now you can!
The EQ Sketch button starts EQ Sketch mode, which lets you draw the entire EQ curve in one step

Instance List

Lets you control all instances in your session via a single plug-in interface
Huge time-saver, making it much easier to setup initial EQing when starting a mix session

Spectral Dynamics

Great way to treat harshness and problem frequencies in guitar or vocal recordings
Spectral dynamic processing treats varying frequencies more subtly than traditional dynamic EQing
A separate, complex plugin is typically needed, but Pro-Q 4 simplifies the process as an extension of normal dynamic processing

MORE NEW FEATURES

Setup your mixes with one of the Character modes to add that analog, vintage feel.
The Dynamic EQ section has been improved, with Attack and Release settings, but also optional free side-chain filtering.
You can now choose to use fractional slope settings if you need to, e.g. a 3.5 dB/oct LP or HP filter.
Improved dynamic EQ processing for less distortion and cleaner sound.
Improved precision in linear phase processing.
New All Pass filter shape.
You can now copy and paste EQ bands or presets, also between instances or via the new instance list.
Improved analog matching in zero latency and natural phase mode.
You can change parameters directly via the value display in the EQ controller by dragging or with the mouse wheel.
Overall new and fresh design
Many additional minor improvements