Individuals allergic to dust: you don't have THAT much to complain about. You get stuffy sinuses, headaches, watery eyes, irritable. . . yes, yes, I empathize, believe me. At least dusty build-up won't permanently hinder your ability to effectively communicate with co-workers, like is does to 2- and 4-pole Speakon connectors. The new Neutrik Dummyplug is like Allegra for your unused jacks (and is available without a prescription).