Username,
We've carried the Exiles since inception of the XM7 and have yet to experience an issue with the jack. In fact, we've supplied several members on this forum with XM7s. I had an initial concern with this myself and inquired about it. Exile/Sampson claim to use a ProSound grade connector. This would be identical to those 1/4- inch jacks abused by roadies and musicians who constantly use and move equipment in a tough environment. So if there are any specific and legitimate cases that you are familiar with then please email me and I will pass it on. So far I've only heard of speculation from competitive companies. I would sincerely like to hear of any instances.

David
Earmark Marine