Question I have a problem with my earphone

May 9, 2019
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Hi, I have a problem with my earphone, the problem is with the bass, the earphone is left, the bass is smaller than the right one, even though 9 hours ago it was still functioning normally, 4 hours later, when I took my earphone in the bag, suddenly this problem happened, I am confused by this problem. The earphone is 2 weeks old.

Sorry for my bad english, I'm using google translate.