The 990 is a large diaphragm condenser microphone, which just means that the part that picks up the sound (the diaphragm) is bigger (large) and that it requires you to enable something called Phantom Power, that could also be labeled 48v, in order for it to work.
Since moving to Nashville I have heard one name recommended more than any other by veteran producers, artists, and even record label executives. That name is Abel Mendoza and his amazing company known as That Worship Sound.
When I started to notice laptops popping up on top of soundboards my curiosity was peaked, what I discovered is a game changer and probably the future of live sound audio. A program by Waves known as MulitRack.
The first thing I noticed was the flexibility of connection. Most headset microphones must be customized to the brand of wireless packs you are using because they each have their own special connection.