Headphones are, in a sense, the forebearer of everything else on this list. In their simplest form, a pair of headphones is two simple speakers attached to a band. This then goes across the top of the user's head. This means the speakers are positioned directly over the ears. This provides a personal, immersive listening experience where the sound source delivers its brilliant sonic payload directly into the ears. The experience of listening to headphones is somewhat unique in comparison to traditional speakers, which vibrate large segments of air within a room to recreate sounds.