Developer website: IK Multimedia
T-RackS 3 Opto Compressor... Optical compression has a special sonic character that audiophiles can truly appreciate. This analog-modeled module faithfully recreates that particular (and extremely musical) "movement" that characterizes only the best opto compressors. An important characteristic of optical compression is the total absence of distortion and coloration during gain reduction, and you can expect the same character and performance from this digital recreation.
Mac OS X 10.4 or later