Opposite of Headphone

The opposite of headphones would be devices or methods that do not deliver sound directly into the ears. For example, speakers or public address systems project sound outward into a room, allowing multiple people to hear simultaneously, unlike headphones that deliver sound privately. While headphones isolate sound to an individual’s ears, an opposite approach would be open, shared audio sources that do not require personal listening equipment. Essentially, it’s a means of experiencing sound externally rather than privately through individual listening devices.