An External DAC (Digital-to-Analog Converter) is a device that converts digital audio signals into analog signals. This process is essential for playing digital music through speakers or headphones, as most audio equipment operates in analog. External DACs are often used to improve sound quality compared to built-in DACs found in computers or smartphones. These devices connect to audio sources via USB, optical, or coaxial cables. By using higher-quality components, external DACs can provide clearer sound, better detail, and enhanced dynamic range. They are popular among audiophiles and music producers who seek superior audio performance from their systems.