Sorry I missed your question @markush
I have the new Muon ethernet filter and cable and just love them. I upgraded from their ENO line which I also enjoyed as outlined in my original post as the OP of this thread.
So how does if differ from the ENO range? Quite simply the Muon reduces the noise even further and reveals more of the music’s inner detail and beauty. My system became more resolving and musical at the same time. This is a hard combo to pull off in my experience.
I have found break in is about 100 hours or so. They start off sounding a tad too smooth. They then become very open, resolving and lively. At around 100 hours they retain their great resolution, realism and liveliness but fill in with more body and fullness. My system is more engaging than with the ENO. More details such as plucked strings, decay, and venue space become part of the experience. Improved realism and life over the ENO. It makes me want to turn up the volume and enjoy the effortless presentation. Just a wonderful upgrade.
Hope this helps!