Club sound reinterpreted. Signature Pulse shows you that you don't have to do without reference sound quality in your club. Dynamic 50mm drivers give you enough power to deliver intense bass. Ultrasone uses S-Logic 3's natural surround sound and ULE (Ultra-Low Emission) radiation reduction technologies to ensure a comfortable and safe listening experience. Made of leatherette and durable plastic with a bronze nameplate, these headphones give you comfort and flexibility, not just for DJ work.