An external DAC (Digital-to-Analog Converter) is a device that converts digital audio signals into analog signals, allowing you to listen to high-quality sound through speakers or headphones. Unlike built-in DACs found in computers or smartphones, external DACs often provide better sound quality and more features, such as support for higher sample rates and various audio formats. These devices connect to your audio source, like a computer or a smartphone, via USB or optical cables. By using an external DAC, audiophiles and music enthusiasts can enhance their listening experience, enjoying clearer and more detailed sound reproduction from their favorite music or movies.