Technology is constantly changing, and so microphones themselves are constantly being replaced by newer and better ways of amplifying your voice. But while the technology changes rapidly, the fundamentals of effective microphone usage change much more slowly.
The microphone is one of a speaker’s most powerful tools, and that promises to be true for the foreseeable future. So whether you're a professional speaker or a public speaker, whether you anticipate speaking before huge crowds or small, intimate groups, knowing how to use a microphone effectively will be of enormous benefit to you as a speaker.
With a little practice and preparation, “can you hear me now?” is a question you’ll never need to ask your audience.