Dirac HD Player

odysseyhk

If you are using iphone and using the New Apple EarPods , try this app.  It improves the audio performance pretty well.  Cost you nothing if you use the lite version. I like it.

http://www.dirac.se/en/consumer-products/dirac-hd-player.aspx

Ching pls try and see if you hear improvement with it.  

odysseyhk

Finally, there is motivation to copy music files to my iphone.