What are the features of audio card?

An audio card, or sound card, typically includes features such as multiple audio input and output ports (like 3.5mm jacks, optical, and MIDI), support for various audio formats, and built-in digital-to-analog converters (DACs) for high-quality sound reproduction. Many audio cards offer surround sound capabilities and advanced audio processing technologies, such as 3D audio and noise cancellation. Some models also come with software for audio mixing, equalization, and effects, catering to gamers and music producers. Additionally, high-end audio cards may provide low latency performance and higher sample rates for professional-grade audio applications.