The output signal is decoded to STEREO (left/right) finally.
MS EQ COMP can encode standard STEREO (left/right) signal to MS (middle and side) and add EQ and Compressor separately to middle and side, also edit the volume and pan. features this description on their website – A bonus feature is a preset manager where you can save and recall your favorite presets. If you aren’t interested in getting that type of processing you can link the modules in order to work in stereo by pressing a clearly labeled and easy to see button at the bottom of the plugin’s GUI. The effect features a 3-band equalizer specifically for adjusting the center or the sides. It is a straightforward plugin in design and function which we’re quite grateful for, it’s part of what makes this such a quality plugin.
The plugin is available both for Windows and Mac OS platforms. recently released a FREE mid-side equalizer and compressor plugin called simply MS EQ COMP.