FabFilter 's Pro-C 2 is a compressor software with eight different compressor styles and program-dependent attack and release curves. It is used in mixing and mastering audio applications such as studio recording, post-production, and more.

It features flexible signal routing, for example in Expert mode where external sidechain inputs are available, offering a choice of mono, stereo or mid-side processing with customizable link and channel routing.

In addition to classic compressor controls, the plug-in offers smooth preview, up to 4x oversampling, intelligent auto gain and auto release. Variable knee, hold, range, external sidechain drive, variable stereo link, and mid/side processing, all in a beautiful Retina user interface. The redesigned interface offers insightful measurement and real-time displays to improve workflow, with the large animated knee-level display visualizing exactly when, why and how compression is applied to incoming audio.

• Eight different compression styles: vocal, mastering, bus, punch and pumping

• Retina interface, with (optional) animated knee level displays and accurate peak/volume measurement (Retina support on OS X and high DPI support on Windows)

• Side-chain equalization section, with customizable high-pass and low-pass filters, plus an additional freely adjustable filter

• Program-dependent attack and release curves

• Smooth lookahead (up to 20 ms), which can be enabled/disabled to ensure zero latency processing

• Intelligent auto gain

• Hold (up to 500 ms)

• Custom knee, variable from hard knee to 72 dB soft knee (to allow for saturation-like effects)

• Automatic release

• Super-fast attack times

• Oversampling up to 4x

• Variable stereo link and mid/side processing, with mid-only, side-only, M > S and S > M processing

• Audition Triggering option, which allows users to hear which parts of the audio the Pro-C 2 is triggering and how much compression is occurring

• Various interface sizes – small, medium, large

• Range setting, which limits the maximum applied gain change

• Mix setting, which scales the gain change from 0% to 200%

• Full-screen mode, offering a large level display and side-chain EQ controller

• Large, accurate level and gain change meters, with peak and intensity level visualization.

• The intensity level complies with the momentary mode of EBU R128 / ITU-R 1770 standards

• External side chain drive

• GPU-powered graphics acceleration

• Stereo and mono plug-in versions available

• Supports common Pro Tools hardware control surfaces

• Learn MIDI

• Undo/redo and A/B comparison

• Intelligent parameter interpolation

• Automation needs sampling of all parameters

• Extensive help file with interactive help tips