I bought a new phone, the Xiaomi mi a1, and it has a built-in amp with 10V. I also have the Sennheiser IE80, with an impedance of 16 Ohm. The problem is that whenever I use those two with each other, a very annoying hizzing/static noise is to hear. The same with other headphones with low impedance. I've already tried my Beyerdynamics dt990 pro 250 Ohm with the phone, and it sounds perfectly fine. I already searched for this kind of problem, and stumbled upon this product from DUNU: https://tinyurl.com/y9qhkff9. Would this impedance adapter solve my problem? If not, what would you suggest to do? Any help is appreciated. Thanks.