In launching the open-back DT 900 PRO X, we are unveiling circumaural studio headphones, which are set to usher in a era for the long-established, Heilbronn-based company. While our classics of the PRO series are regarded as reference products in professional studios all over the world, the PRO line is suitable for flexible use both in the studio and while on the move. It is all made possible by the STELLAR.45 driver that loudly reproduces the best sound in studio quality without any distortion with all playback devices.