If you use Spotify, Amazon Music, or Pandora, you need the HELM Audio Bolt USB digital analog converter. This useful gadget enhances the audio quality to listen to music the way the artists intended it to sound. And it's even compatible with your smartphone, so you can experience studio-quality audio on the go. In fact, it plays various music files: MP3, MQA, and high-resolution formats. In addition, this USB digital analog converter offers reduced crossover distortion and ultra-low harmonic crosstalk for a sound you'll love. Overall, HELM Audio describes this product as "4K video for your ears." So you're sure to love the way it sounds. And this music gadget can unfold MQA music at over eight times the sampling rate of a CD.