A Digital Audio Player (DAP) is a portable device designed to store and play digital audio files. These players can support various audio formats, such as MP3, WAV, and AAC, allowing users to enjoy their favorite music on the go. Many DAPs come with built-in storage, while others offer expandable memory options through microSD cards. Modern DAPs often feature touchscreens, Bluetooth connectivity, and long battery life, making them user-friendly and versatile. Some popular brands include Apple with its iPod, Sony, and Astell&Kern. These devices have largely replaced traditional CD players and tape decks in personal music consumption.