The IVGI is a very subtle plugin dealing with saturation. Instead of using this on individual channels you can better add this to your Master Channel Buss.
The sound of this VST can range from subtle to a very gritty distorted signal, which is a good thing.
It can add punch ad overdrive like modulation.
The way it works is that it adds it’s harmonics dynamically while it does not cross with the original source sound.
It really sounds like an emulation of something which cost very expensive.
Products from Klanghelm are very interesting just like it’s siblings the” DC1A 2 and the MJUCjr.
Available for Windows and OSX on Apple Mac, go and download them all for free!