The Sennheiser name is especially well-known for high-end audio gear, so it's not surprising that the company's new BW900 ($390) takes Bluetooth wireless headsets to an altogether new level. BW900 breaks the standard Bluetooth headset mold by making no compromises on size in order to achieve unusually impressive audio quality: the microphone extends via memory wire all the way down to your mouth, where it's either exposed or covered by a foam windscreen,…
