I think Poco X3 NFC need hires support because as i see for now it only support 16bit and 48kHz output.
1. Poco X3 NFC
2. MIUI 12
3. As we can see at the website Poco always see they make Poco X3 NFC with Stereo with HiRes Audio Certified... And you can see Hi Res Logo at back of the box
4.
22:07:06.495 build-893-arm64-play
Device: POCO Xiaomi M2007J20CG surya_id surya "qcom" surya QKQ1.200512.002 test-keys [arm64-v8a, armeabi-v7a, armeabi]
sm6150 is_snapdragon
FAILED to read=/vendor/etc/audio_output_policy.conf
reading=/vendor/etc/audio_io_policy.conf
has direct_pcm_24, sampling_rates=44100|48000|88200|96000|176400|192000|352800|384000
AUDIO_OUTPUT_FLAG_DIRECT direct_pcm_24
has direct_pcm_24 formats=AUDIO_FORMAT_PCM_24_BIT_PACKED|AUDIO_FORMAT_PCM_8_24_BIT|AUDIO_FORMAT_PCM_32_BIT
FLAG_VARIANT_DIRECT_HD via direct_pcm_24
forcing FLAG_DLFCN FLAG_NEEDS_DEEP_BUFFER FLAG_NEEDS_EXTRA_SLEEPS
MIUI=10
=> FLAG_VARIANT_DIRECT_HD_10_STREAM
USB can handle Hi-Res - sdk=29
OK flags=0xe74616600008000
FLAG_VARIANT_DIRECT_HD_10_STREAM
FLAG_SUPPORTS_PCM_8_24
FLAG_SUPPORTS_PCM_24
FLAG_SUPPORTS_PCM_32
FLAG_SUPPORTS_UNITY_GAIN_STREAM
FLAG_SUPPORTS_USB
FLAG_NEEDS_EXTRA_SLEEPS
FLAG_SUPPORTS_LDAC
FLAG_DLFCN
FLAG_NEEDS_DEEP_BUFFER
FLAG_ALLOW_DVC_EFFECT
FLAG_BT_DVC_EFFECT
PA_OUTPUT_CAP_NEEDS_VOL_UI
INTERNAL_OUTPUT_FLAG_SR_384K
INTERNAL_OUTPUT_FLAG_SR_352K
INTERNAL_OUTPUT_FLAG_SR_192K
INTERNAL_OUTPUT_FLAG_SR_176K
INTERNAL_OUTPUT_FLAG_SR_96K
INTERNAL_OUTPUT_FLAG_SR_88K
INTERNAL_OUTPUT_FLAG_SR_48K
INTERNAL_OUTPUT_FLAG_SR_44K
Thanks for your attention 👍
