meizu m6 note 721H flyme os cn 7.8.4.22 beta
chip:snapdragon 625
codec/dac/amp:Qualcomm Aqstic
wcd9335 / ? / wsa881?
snapdragon 24 bit pcm
theres no mention of hi-res capabilities from meizu sources are from qualcomm
https://www.qualcomm.com/documents/snapdragon-625-processor-product-brief
https://www.qualcomm.com/solutions/mobile-computing/features/aqstic
audio_policy.conf