Harman has been planning to splash its Austrian headphone brand AKG in the United States for some time, and is now in the process of doing just that. Probably known best in the past for its over- and on-ear headphones, K 340 ($120) is amongst its new lineup of iPhone- and iPod-friendly in-canal earphones, all at above-starter price points, and featuring intriguing designs. K 340 is sold in a "fudge" color that's actually closer to gunmetal, with gray…