This can be useful for individual tracks, busses, and overall mixes. The sonic characteristics of the clipping distortion can be altered from hard, brickwall-style clipping, to softer saturation with compression. The threshold controls for Clip Shifter’s clipping can be set to dynamically change based on the transient characteristic of the incoming audio. Clip Shifter is available as a Windows 32-bit or 64-bit VST plugin.
This free plugin is available for Windows 32-bit and 64-bit (Windows XP/Vista/7/8).
More information: Clip Shifter