We've already tested the HFI 2200ULE model (£230), and now there are another five models joining the HFI range, priced from £80-£195.
Ultrasone's HFI models use the company's S-Logic technology, which uses "natural surround sound technology to improve sound quality".
How does this work? Well, Ultrasone claims the S-Logic design pushes sound around your ear using a decentralised driver position, which "makes it appear as though you are listening to speakers metres away".
Sound pressure levels are reduced by 3-4dB to reduce hearing damage. And all HFI headphones use Ultra Low Emission technology (ULE) to produce a low-frequency magnetic field, claimed to be up to four times less than that of rival products.
The Ultrasone range is available now from Amazon at the following prices: