But personally:
-The Son of matter avoids nodes to create.
-The Sound is for me very well
-There Are strong, even if the join between the jack and the son seems low, but at the moment no worries
-They Are passed to the machine and still works' -_-
-The Protective box is not bad
No .... no complaints, if they are still alive in years they will spend 1 to 5 stars :)