With the open-back DT 900 PRO X, beyerdynamic presents a pair of cicumaural studio headphones that set no (spatial) limits to your creativity. The new PRO series is suitable for flexible use in the studio as well as on the road. The DT 900 PRO X is a must-have quipment for a creator who wants to work on his music always and everywhere and experience the best sound in studio quality.