Utrasone HFI 2200 ULE   (Discontinued by Manufacturer) S-Logic natural surround sound moves the sound out of the headphones Pressure to the ear drum is decreased by up to 40% (3-4dB) for the same perceived loudness ULE technology with MU Metal shielding to reduce radiation by up to 98% compared to ordinary headphones Open, dynamic headphones use a 40mm gold driver that provides a rich, warm sound with extremely lifelike ambience Detachable cable and soft velour quick change earpads .1/8 plug, " screwable adaptor, demo CD, and carry bag included