Denmark's AiAiAi has developed a reputation for targeting its headphones at specific listeners. This time, it's aiming at someone we know all too well: the urban dweller who goes through replacement headphones like so much meat through a grinder. The Capital over-ears' bolstered fiberglass shell is designed to be rain- and snow-resistant, not to mention take the casual knocks that might beat up other headphone pairs. The foldable set likewise gives us every excuse to keep it on our heads, both through