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CNET editors' review
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CNET editors' rating:
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Detailed editors' rating
- Reviewed on: 07/28/2008
- Released on: 10/02/2001
Unlike the Ultrasone HFI-2200s, which allow sound to be projected from the actual ear cups, the Ultrasone HFI-580s are a "closed-back" pair of headphones, so they hush outside noise, which prevents the headphone's sound from being heard by other people around you. That's good, except that a lot of closed-back (ear-cup) headphones usually sound canned or hollow. This was not the case with the Ultrasone HFI-580s; the headphones were so free of the usual closed-back sound colorations that we had to check the specs to confirm the headphones were, in fact , a closed-back design.
The HFI-580s are handsome in a professional sort of way. They would look right at home in a recording studio. Their soft leatherette ear pads completely covered our ears, but since we were testing these headphones during fairly hot summer days, our ears grew sweaty over hours of listening. We had no problem once the temperature and humidity dropped.
The central part of the cups' exterior, where the headband attaches, consists of chrome metal pieces, which are clearly marked with "L" and "R," respectively. The adjustable plastic headband feels quite sturdy, and there's a leather cushion at the very center of its arc for additional comfort. A 15-foot headphone cable is permanently attached to the left ear cup and is terminated with a 3.5mm plug. Included is a screw-on phono plug adapter intended for use with AV receivers and the like. The HFI-580 can be folded for easy storage in its included travel bag.
The HFI-580 features Ultrasone's S-Logic Natural Surround Sound Plus technology that bounces sound from the 50mm Mylar driver off your outer ear, instead of firing directly toward your eardrum. The effect produces a less headphone-like sound, closer to the sound of conventional external speakers.
Like many Ultrasone headphones, the HFI-580s feature ULE (ultra low emission) technology. Ultrasone claims that "most headphone drivers produce low-frequency magnetic fields as they convert an electric signal into an acoustical signal you hear as music." To combat this exposure to a magnetic field, Ultrasone claims to utilize a special type of "MU metal shielding" that purports to "reduce radiation by up to 98 percent compared to current headphones."
Thanks to the HFI-580's closed-back design, you can watch movies in bed without disturbing the person next to you; unless you crank up the volume extremely, they won't hear a sound from your HFI-580s. Another benefit of closed-back headphones is they tend to have deeper, more powerful bass than equally sized and similar-priced open-back headphones. The HFI-580's plentiful low-end oomph may be too much for some tastes, and in our opinion it was.
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