Got this interesting article in Google.... Every phone powered by a Qualcomm processor has a built-in WCD9xx Audio DAC, but it's rarely configured to be used to its full potential by OEMs. This might not seem like a problem to some people, but if you're a music lover, or you simply enjoy high-quality sound, it's an issue you'll definitely want to fix.
Thankfully, developer androidexpert35 has found a way around the problem. His Magisk module, Hi-Performance DAC Enabler, enables High-Performance Mode on your phone's Qualcomm WCD9xx Audio DAC. By enabling High-Performance Mode, the audio quality of Qualcomm-powered devices will not only receive a boost in volume but will sound more clear and crisp as well.
