iFi Audio UnoThe One you need Not sure what a DAC is but know you want better sound quality for your music, movies, games, podcasts and YouTube guilty pleasures? Then, the new iFi Uno is for you. All devices that act as digital sound sources use a built in DAC (Digital to Analogue Converter) to convert the digital info in your source device your computer, tablet or smartphone to music you can hear through speakers or headphones. External DACs sound much better