A-format is a type of audio file format commonly used for storing and playing back sound recordings. It is designed to provide high-quality audio while maintaining a relatively small file size. A-format files are often used in professional audio applications, such as music production and sound design. This format is particularly associated with Ambisonics, a technique for capturing and reproducing three-dimensional sound. A-format files typically contain multiple audio channels, allowing for immersive sound experiences. They can be converted to other formats, such as B-format, for further processing and playback in various audio systems.