Sonos 4 is a software multiband compressor limiter for radio broadcasters. With this software and a suitable sound card it is possible to turn a Windows PC into an radio broadcast processor. The processor achieves its unparalleled loudness through the use of a unique distortion masked final clipper.

A complete rundown of the features can be found here.




The download is a demonstration version. The audio is interrupted for 1s every minute.
Read the getting started page if you cannot get Sonos 4 working.