The Immanis are incredibly good headphones. The best in the world? Well, I'd have to listen to the Sennheiser HE-1 again to find out. It outperforms all the headphones I know. From memory, the HE-1 doesn't offer the gigantic spatial imaging of the Immanis. Only a direct comparison can show the rest. Whether the price of €10,000 is justified is for everyone to decide. In any case, it is clear that the Immanis is currently one of the absolute top headphone, with no ifs or buts!