Look,I lost sound in the left channel and sent them in to be fixed.Also this connection theory is just that a theory.I think I've said enough for one night.
With the original K701 there were alot of people who had problems with the stock cord being pulled out and thus losing the connection.With the new K702 they provide have a detachable cable which fix's this problem.Just one of the differences.Also this is my first post as I've been hanging around on Head-fi for about two years now.