Yeah, those Monster units aren't designed for repeated plugs and unplugs, are they? Seems like they intend for them to go on once, permanently.

I've been known to occasionally snap off one of those tabs on a Monster plug before, just to make sure it came undone more easily.

I would recommend using a different kind of cable if you're going to be doing a lot of plugging and unplugging, regardless of whether it's an empeg or any other kind of device.