Behringer ULTRALINK MS8000

I got the Behringer ULTRALINK MS8000 from Thomann to build an ear rack system.
I did not test the MS8000 when it came and the device stayed in the box because I was waiting to have sufficient money for a Behringer x32 rack.
The period of 30 days return pass and I did not test the device and the sound quality.
When I finally got my new Behringer x32 Rack I tested the ULTRALINK MS8000 and I noted this spliter added a considerable noise floor on each channel I connected and was very annoying and unpleasant to use live .
I have use and tested with a small patch core with nice direct xlr cable on all splitter connectors and connect only direct to the input of the mixer always add very noticeable noise floor.

I suppose it was a problem with this device in particular and I got another ULTRALINK MS8000 from a different supplier and the audio result was the same .
Conclusion: I'm an unlucky person or the ULTRALINK MS8000 is not capable of delivering a clear sound. I did not expect that from Behringer product these days and this was a problem from the past as I have a lot of their products and not so many downsizes on it .