Product description    Top-end components in the XBA-300AP ensure an uncompromised listening experience on the go. The brass sound path offers low resonance for clearer， more accurate sound， while a rigid and lightweight magnesium housing further reduces resonance and also prevents distortion. The provided XBA-300AP cable is designed to give an optimum audio performance. Its 4-wire ground separate cable cuts interference between left and right sounds， while the silver-coated OFC material helps to reduce transmission signal loss.