Really odd music quality behavior!! Asus Zenfone 2.

[Makm]

If you own a zenfone 2, then while listening to songs with your headphone, using the default asus music app, open the default asus gallery app. And see if u notice any music quality difference. The bass should sound deeper. Switch back to the music app and notice if u can hear the clarity increasing including more hissing noise. This is such an odd thing happening with my zenfone 2. Any explanation for this?