No piece of audio equipment has evolved more in recent years than the in-ear headphone. Earbuds, especially those without wires, have always been more convenient than over-ears, but now, thanks to increasingly small drivers, they also sound as good. There’s no pair this is more true of than Bang & Olufsen’s new earbuds, the Beo Grace. The Danish company’s latest caused a stir when they were announced in September. It wasn’t their design, aluminum construction, or long-lasting battery life that got people talking; it was the $1,500 price. I’ve since spent a few weeks with the Beo Grace, using them to listen to music on walks, drown out the subway during my commute, and relax at the end of the day. They’re impressive by any metric, but read on to find out whether or not they justify their cost. Audio Performance This year’s Robb Report Audio Awards showed that there are several in-ear headphones that offer excellent sonic performance,..