An audio splitter is a device that allows multiple audio outputs from a single audio source. It typically has one input jack and two or more output jacks, enabling users to connect multiple headphones or speakers to a single device, such as a smartphone or computer. This is particularly useful for sharing music or audio during group activities. Audio splitters come in various forms, including 3.5mm audio splitters and USB audio splitters. They are commonly used in settings like classrooms, parties, or home entertainment systems, making it easy for several people to listen to the same audio simultaneously without needing multiple devices.