When you can listen to music, but the video does not have sound

Q)
The music has sound, but the video does not have sound. What is wrong?

A)
Please check if radio works or not. If you can listen to radio but you can not hear any sound from videos, please check your amplifier.
This is because the videos from ROSE are all 192khz signals and radios have much lower signals.
Unfortunately, some amplifiers cannot play 192khz signals.
There is currently no adjustment function to lower the signal. (192khz)

Check the amplifier specifications, and check if the symptoms are the same for other amplifiers.

Thank you.