your RME ADI-2 DAC FS drops one channel selectively?

[skyfly]

I am testing my newly bought RME ADI-2 DAC FS. It shows "C" next to the serial number (ESS dac chip inside). There is a serious problem that might make me return this DAC.

I already downloaded and ran the software installations (firmware and driver) from the RME web site.

The DAC selectively (not for all tracks, only for some tracks) drops the right channel completely.

For example, it completely mutes the right channel of each of the harmonic distortion tracks ripped from Pierre Verany CD. Those tracks contain 0dbFS sinusoidal tones on both right and left channels.
The right channel shows UFL on the RME DAC's display, and there is no output.

With the same computer (I tried both my mac mini and my Windows 10 laptop) and the same USB cable, other DACs (Focusrite, Topping) do not drop the right channel.

 

[fredoamigo]

you should talk about your problem on the RME forum https://forum.rme-audio.de/viewforum.php?id=21

 

[skyfly]

you should talk about your problem on the RME forum https://forum.rme-audio.de/viewforum.php?id=21

Thanks a lot for your suggestion.
I posted questions on the RME forum. As the return period is short, I may return it before RME replies my posts.
why haze from the factory?
dropping one channel on some tracks

 

[Deemic]

Ramses is a Mod on the RME User Forum and is extremely quick responding to questions. Otherwise there are a lot of good people on that forum that will help however they can.
RME has a fantastic reputation for producing rock solid stable products.