Originally Posted by
Garthr
.....if the cartridges need replaced, CK will do that.... I've often read.... for no charge. These are not user replaceable cartridges, so don't worry about what cartridge size it is.
I wonder if you have to show your are the original purchaser? CK has a 10-year warranty on their headsets but their warranty statement makes no mention of transferability either way. A used CK with no sales receipt could result in some pretty high bearing replacement costs.