Beyerdynamic's Headzone headphone promise "perfect spatial impression"

We've got another from the pre-IFA run-up, this time it's Germany's own Beyerdynamic getting set to launch their Headzone Home surround-sound headphone system. Using their patented "Headtracking" tech, the kit is said to react to the listener's head movements and automatically adapt "the space impression" in real-time. In other words, the actors' voices remain at the front of the room even while turning your head. They even claim to deliver "perfect spatial impression" regardless of your room acoustics. With a list price of €2490/$3,397, they'd better. Best give these a whirl in a noisy showroom before laying out that kind of dough, though.