Generally very good, nice sound, good isolation but I really don't like that they used proprietary cables. These cables have a twist-to-lock mechanism that jammed when I inserted the shortest cable. Looking online I saw other people with exactly the same problem, the solution seemed to be to keep twisting the cable from locked to unlocked position until eventually it lets go and after that seems reliable and I can insert and remove all three cables with no problem.
Danke für Ihren stets tadellosen Service und frohe Festtage dem ganzen MusiX Team