Meizu is killing all earphones!

The Meizu M6 SP form my friend has a strange problem: After a few days of normal use, the earphones are loosing their complete bass. He tried 2 brand new earphones already and it is always the same.

Does anyone have an idea what is going on with that? How can the Meizu M6 blow up the bass-output of earphones?

sounds like he is blowing the drivers... Does he have the eq and special effects stuff all maxed out? What kind of volume is he playing at?

i say probably buy some good bass earphones,like (V-Moda Bass Freq Earphones)i had them for a while no problem,pure bass

I hope your friend does not suffer from hearing loss.

No, its not because of too loud output,
he is hearing at 20 Volume, Bassbosst is on level 1, EQ is on Normal preset.