Now let's consider the microphone you might be using. There are four basic kinds of microphones. Although it's fine to have a preference, it's best if you're comfortable with all four types ― because when it comes time for your presentation, you may not have a choice in the matter. The first kind of microphone is a mic which is already attached to a lectern. Although some speakers like this kind of mic because they don't have to worry about holding it, there are a couple of problems with this type of mic.