If you use a 3.5 plug input for audio, will that audio also pass through the HDMI output?

ZowieBox supports HDMI audio output or line-in audio output. If users need to output line-in audio to HDMI, please log in to the ZowieBox web console, and click Setting->Audio to reach the audio configuration interface.

Switch the audio source to line-in and make sure the sampling rate is not 16KHz.

After successfully saving the audio parameters, click Video -> Output, and make sure that the HDMI mute is not turned on and is not switched to loop out.