Strange noise from Prism Sound Lyra 2

I am trying to identify the noise problem I am having with the Left channel on the Lyra 2 interface.
I will post a video clip so you can hear what I am talking about. Its not only this noise, this channel has
10dB less gain than the Right channel.
I contacted the technical support of prism sound but they suggested to reflash the fireware but this didnt solve the problem.
I hope you can help me.

Thanks.
 

Attachments

  • noiselyra2-1.mp4
    1.3 MB