A digital-to-analog converter (DAC) is a type of device that converts digital signals into analog signals for connection to sound systems. This conversion is essential for audio playback, as most sound equipment, such as speakers and amplifiers, operates on analog signals. DACs take digital audio data from sources like computers or smartphones and transform it into analog waveforms, allowing for clear and high-quality sound reproduction. The performance of a DAC can significantly influence the overall listening experience and is a critical component of modern audio systems.