Klipsch has introduced two new pairs of in-ear headphones, and has promised to have a new pair offering iPod shuffle 3G compatibility by this summer. Klipsch’s new Image S4 and S2 in-ear headphones feature the same proprietary oval ear tips as their predecessors, moving coil designs with controlled damping, passive noise-cancelation, and an iPhone-friendly 3.5mm headphone plug. The Image S4 also features a dual magnet motor structure designed…