1.Xiaomi 6
2.Android9.0(pixel experience unofficial)
3.Qualcomm Snapdragon 835
Hires can work on official rom(MIUI9 with Android 8),but can't work on Android 9 (No sounds after open hires output ) Hope to solve it. The serious background noise on Xiaomi 6 without Hires supported.
audio_output_policy.conf