Ableton Forum

Is it possible to use, for instance, the Waves Rcompressor, and set up a sidechain input in Live?

I haven't found the answer to this in the forum and doubt it's possible, but hope that it is..

Thanks!

It depends on the compressor. Some have extra inputs to receive audio and some don't.

For RCompressor it looks like it isn't currently supported for Live:

Sidechain is supported on Pro Tools, Logic Pro, Nuendo, Cubase, Audition CS6, and Studio One only.

http://www.waves.com/support/tech-specs/supported-hosts

The 2nd dropdown window in an audio tracks "Audio To" is where you can route the audio to the compressor in another track.

waves support sidechaining in VST3 hosts.. Live implements VST2.4....
that said....I can use audio/sidechain inputs on my native instruments plugins

recently.. VST2.4 API has been discontinued by Steinberg
so I'm guessing Ableton would implement VST3 support eventually

VST3 hosts are Cubase... Nuendo...Studio1...Sonar X3..Adobe Audition