Can designer headphones enRICH the music you listen to? That could easily be the case if what you are sporting is a pair of headphones by megabrand Chanel. This year the French authority on luxury collaborated with California-based Monster Inc. to produce headphones like no other. Your $5,000 purchase at a Chanel boutique consists of a black quilted pair of headphones with an accompanying case…both with the double C monogram, natch. The clout of a great luxury brand embracing technology is a sure sign that a seismic shift in fashion is on the horizon.