The Hi-X55 professional over-ear headphones from Austrian Audio.  High excursion proprietary drivers were designed especially for today's contemporary music production. A folding metal construction is made of durable materials for long-term use and easy carrying.  Soft slow retention memory foam earpads provide the greatest comfort during long sessions. These headphones are equipped with a detachable cable and 3.5mm (1/8 inch) to 6.3mm (1/4 inch) adapter.