1. Go to root/system/etc, find this file mixer_paths_wcd9326.xml 打开/system/etc,找到mixer_paths_wcd9326.xml, 2. Open it. Go to this line <ctl name="RX HPH Mode" value="CLS_H_HIFI" /> 打开它,跳转到这一行(见原文), 3. Change "CLS_H_HIFI" to "CLS_H_LP" 把“HIFI”改成“LP”, 4. Save, reboot.