Digital-to-analog converters (DACs) translate digital audio data into analog waveforms that your ears can hear. If you are listening to wired headphones from a phone, iPod, computer or CD player, you are already using a DAC. Have wireless headphones? They have a DAC inside of them.
Most high-end DACs today are the center of a digital audio system and USB from a computer, tablet or phone is the most common input with SPDIF optical and coaxial losing popularity. Wireless transmission is also on the rise and we list such models as Music Streamers.