Mac & 
Win T-RackS Vintage Series
The compressor is the most frequently used signal processor in the studio, and has been throughout the history of recording. Compressors have been used both to control the dynamic range of individual tracks and full mixes, and to achieve creative effects — many of which ended up becoming integral parts of the sound of hit songs and even entire musical styles.
Requirements
Mac (64 bit CPU, 32 or 64 bit Mac OS)
Minimal: 1.5 GHz Intel processor, 1 GB of RAM, Mac OS X 10.6or later.
Supported Plug-in formats: Audio Units, VST, RTAS, AAX (32and 64-bit).
Note: on 64 bit systems, the plug-in also works in 32 bitcompatibility mode.
Windows (32 and 64 bit)
Minimal: Intel Pentium 4 2.4 GHz or Intel Core Duo orAMD Athlon 64,
1 GB of RAM, Windows XP, Windows Vista, Windows 7 orWindows 8.
Supported Plug-in formats: VST, RTAS, AAX (32 and 64-bit).