[fritsch]

That's from my FireTV 4K:

2020-03-03 19:58:46.105 T:10440  NOTICE: Enumerated AUDIOTRACK devices:
2020-03-03 19:58:46.105 T:10440  NOTICE:     Device 1
2020-03-03 19:58:46.105 T:10440  NOTICE:         m_deviceName      : AudioTrack (IEC)
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_displayName     : AudioTrack (IEC)
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_displayNameExtra: Kodi IEC packer (recommended)
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_deviceType      : AE_DEVTYPE_HDMI
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_channels        : FL, FR, FC, LFE, SL, SR, BL, BR, BC, BLOC, BROC
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_sampleRates     : 32000,44100,48000,88200,96000,176400,192000
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_dataFormats     : AE_FMT_S16LE,AE_FMT_FLOAT,AE_FMT_RAW,AE_FMT_RAW
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_streamTypes     : STREAM_TYPE_AC3,STREAM_TYPE_DTSHD_CORE,STREAM_TYPE_DTS_1024,STREAM_TYPE_DTS_2048,STREAM_TYPE_DTS_512,STREAM_TYPE_EAC3,STREAM_TYPE_DTSHD
2020-03-03 19:58:46.106 T:10440  NOTICE:     Device 2
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_deviceName      : AudioTrack (RAW)
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_displayName     : AudioTrack (RAW)
2020-03-03 19:58:46.106 T:10440  NOTICE:         m_displayNameExtra: Android IEC packer
2020-03-03 19:58:46.107 T:10440  NOTICE:         m_deviceType      : AE_DEVTYPE_HDMI
2020-03-03 19:58:46.107 T:10440  NOTICE:         m_channels        : FL, FR, FC, LFE, SL, SR, BL, BR, BC, BLOC, BROC
2020-03-03 19:58:46.107 T:10440  NOTICE:         m_sampleRates     : 32000,44100,48000,88200,96000,176400,192000,32000,44100,48000,88200,96000,176400,192000
2020-03-03 19:58:46.107 T:10440  NOTICE:         m_dataFormats     : AE_FMT_S16LE,AE_FMT_FLOAT,AE_FMT_RAW,AE_FMT_RAW,AE_FMT_S16LE,AE_FMT_FLOAT,AE_FMT_RAW
2020-03-03 19:58:46.107 T:10440  NOTICE:         m_streamTypes     : STREAM_TYPE_AC3,STREAM_TYPE_EAC3,STREAM_TYPE_DTSHD_CORE,STREAM_TYPE_DTS_1024,STREAM_TYPE_DTS_2048,STREAM_TYPE_DTS_512,STREAM_TYPE_DTSHD,STREAM_TYPE_DTSHD_MA

You see: DTS-HD-MA in the RAW enumeration. Sadly the firmware extracts the Core of DTS-HD-MA, which it announces in RAW mode to DTS only. Means: For RAW you need to test, for IEC - we pack - so what we do in, it will be put out.