Solved! Sony dav dz650

[Samwanjeri]

Why is the sound format below decoded as stereo dolby digital by sony hometheatre dz 650. Is the audio quality too high? Files with AC-3 at 448kb/s 6 channels, 48.0kHz play ok with sorround sound.

AC-3 at 640kb/s
6 channels, 48.0kHz

 

[MaxSt]

DAV-DZ650 specs lists audio decoding as LPCM (2ch / 5.1ch / 7.1ch), which is limited to 48khz or 96khz, so you are probably limited by the DAC in this system.