Okay, boss, this LTX-71 concealable mike is part of the same system that NASA used when they faked the Apollo Moon landings. They had the astronauts broadcast around the world from a sound stage at Norton Air Force Base in San Bernadino, California. So it worked for them, shouldn't give us too many problems.
I believe someone did the math and supposedly showed that it would have been cheaper to actually land on the moon than fake it with what they had available at the time.