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 (opens in new tab) at the following prices: