Hi.
1 XIAOMI MI 5
2 MIUI 8 8.2.2.0 global stable based on android 7.0
3 MI 5 have qualcomm WCD9335 audio dac, and MI5 have hi-res option on previous MIUI ROM based on android 6.0.1
Source :
https://www.myfixguide.com/manual/xiaomi-mi5-teardown/
Keep hard work, and many thanks for really good app that keep my life fun