An audio receiver is an electronic device that receives audio signals from various sources, such as a TV, computer, or smartphone. It amplifies these signals and sends them to connected speakers, allowing users to enjoy high-quality sound in their home entertainment systems. Audio receivers often include multiple input options, enabling users to switch between different devices easily. Many audio receivers also support advanced features like Bluetooth connectivity, allowing wireless streaming from mobile devices. Some models come with built-in surround sound processing, enhancing the listening experience for movies and music. Overall, an audio receiver is essential for creating a rich audio environment.