The new HFI-580 (formerly the HFI-550) is one of our most popular, robust and versatile headphones. These foldable, closed-back high quality headphones with an exclusive design and extraordinary sound, offer the highest standard of technologies. Featuring our super tough 50mm Mylar driver, the HFI-580 can crank out lots of volume without falling apart. The driver is almost impossible to blow, making the HFI-580 a great addition to any studio be it professional or just starting out. Also included in the new HFI-580 is our new S-Logic Plus(TM) surround sound technology which delivers and ever more life like sound in a smaller package. The HFI-580 now also comes standard with ULE (Ultra Low Emission) 98% Mu Metal shielding standard, thicker ear pads and headband pad and a new velvet carrying bag.