I just misunderstood the statement.JohnRoberts said:To better answer your question, look at the difference between what is in the M output and S output... M is primary direct signals, while S is often room ambience.
For one example EQ'ing S can alter the apparent brightness or darkness of the acoustic space.
This is subtle stuff..
JR
I'm working with MS quite a lot, but only in software. Now I wanted to build it in this analog EQ.