: If you own a license for a newer version (like Pro-Q 4), you can typically access older versions (like Pro-Q 2) via the FabFilter Support Page for compatibility with older projects. FabFilter Pro-Q 4 - Equalizer Plug-In
If you see a “Pro-Q 2.0.1 Windows AND OSX .rar” file online, . Not only is it likely illegal, but the security risks (malware, backdoors) can compromise your entire production environment. Instead, buy the plugin or download the official trial from FabFilter.
FabFilter Pro-Q version is a legitimate (though older) update released in September 2014 for the Pro-Q 2 equalizer . However, files with the exact name "Fabfilter Pro-Q V 2.0.1 Windows AND OSX .rar" found on third-party sites are often associated with unauthorized or "cracked" software distributions. Official Version Details
: All filter types—not just low and high cuts—can utilize slopes up to 96 dB/octave , allowing for extremely steep and precise "brickwall" filtering.