The built-in digital-to-analog-converters (DAC) in most PCs and many smart phones are not great. A better external audio converter (like the Dragonfly) can help improve playback quality. Although it is still limited to the quality of the audio source. It can make an mp3 sound better, but it can’t make it sound like an uncompressed file. Good headphones or speakers also help you get a better listening experience. Thanks for responding, Rey.