Hello there,
Zenfone 5 ZE620KL's Headphone audio performance should be improved
. Great sound quality has decreased with the latest updates. Basses should be stronger and unnecessary sounds less. He has a very poor performance in bass. I will specify the version I use and my headphone settings at the bottom. What I want is the sound quality should be clearer and the bass should be harder, more intense. In general, normal sound quality is fine. But it is imperative that it evolves in the earpiece microphones.
The headphone model I use: KZ ED12
Thanks...