The rugged metal shell protects against moisture and physical abuse. 

The hermaphroditic design eliminates stocking and logistical problems encountered with male/female connector systems by reducing the number of required parts. 

All MASS connectors include a heavy-duty dust cap. Inlines also include strain relief. 

Read about how these became the leading multipin connectors in audio history with this article published in the June 2003 issue of LiveSound! Intl.