What is EQ (equalization)? What is frequency? Not as hard to understand as a lot of people think, THAT'S what:-). This video from the newly updated "Newbies Guide to Audio Recording Awesomeness 1: The Basics With Audacity" course explains. https://www.youtube.com/watch?v=DKdpOLh78SU
This is awesome for live recording, videos, ENG and anything else that would sound better in stereo. And M/S is arguably the best method for recording stereo sound. This new iDevices attachment is only $99.99.