UPD:
1. Honor 9x STK-LX1
2. Android 10, EMUI 10.0.0
3. Meizu Hi-Fi DAC PRO, on Honor 9x works on 16bit/48kHz and on Nova 5t works fine up to 32bit/384kHz
21:01:36.145 v3-build-874-arm64-play
Device: HONOR HUAWEI STK-LX1 STK-L21HNRU STK-L21HN "kirin710" HWSTK-HF STK-L21HN 10.0.0.187(C10E3R1P1) [arm64-v8a, armeabi-v7a, armeabi]
FAILED to read=/vendor/etc/audio_output_policy.conf
FAILED to read=/vendor/etc/audio_io_policy.conf
FAILED to read=/system/etc/audio_policy.conf
reading=/vendor/etc/audio_policy.conf
has outputs_primary, sampling_rates=48000
has usb
has usb outputs
has usb_device, sampling_rates=dynamic
has usb formats=dynamic
is_huawei UNKNOWN ro.board.platform=kirin710
USB can handle Hi-Res - sdk=29
FLAG_VARIANT_USB_ONLY
OK flags=0x404001400000000
FLAG_VARIANT_USB_ONLY
FLAG_SUPPORTS_USB
FLAG_SUPPORTS_FLT_DYN_RANGE
FLAG_SUPPORTS_LDAC
INTERNAL_OUTPUT_FLAG_SR_192K
INTERNAL_OUTPUT_FLAG_SR_176K
INTERNAL_OUTPUT_FLAG_SR_96K
INTERNAL_OUTPUT_FLAG_SR_88K
20:44:54.100 v3-build-874-arm64-play
Device: HUAWEI HUAWEI YAL-L21 YAL-L21HRU YAL "kirin980" HWYAL YAL-L61 10.0.0.211(C10E3R1P1) [arm64-v8a, armeabi-v7a, armeabi]
FAILED to read=/vendor/etc/audio_output_policy.conf
FAILED to read=/vendor/etc/audio_io_policy.conf
FAILED to read=/system/etc/audio_policy.conf
reading=/vendor/etc/audio_policy.conf
has outputs_primary, sampling_rates=48000
has usb
has usb outputs
has usb_device, sampling_rates=dynamic
has usb formats=dynamic
USB can handle Hi-Res - sdk=29
OK flags=0x804040400000000
FLAG_VARIANT_DIRECT_HD
FLAG_NEEDS_DIRECT_PCM
FLAG_SUPPORTS_USB
FLAG_SUPPORTS_LDAC
INTERNAL_OUTPUT_FLAG_SR_192K
INTERNAL_OUTPUT_FLAG_SR_176K
INTERNAL_OUTPUT_FLAG_SR_96K
INTERNAL_OUTPUT_FLAG_SR_48K
INTERNAL_OUTPUT_FLAG_SR_44K
