Improve the sound quality of your smartphone, tablet or laptop with the AudioQuest Dragonfly Black. This digital/analog converter can be connected via the USB port. When using an adapter cable, you can also connect it to your smartphone or tablet. The integrated 32-bit ESS Sabre DAC chip ensures a natural and detailed playback of your favorite music. The Dragonfly Black improves sound quality from any source. Not only music from Spotify, MP3 files, or ripped CDs, YouTube videos will sound much crisper as well.