Utrasone PRO 2500   (Discontinued by Manufacturer) S-Logic Natural Surround Sound provides a more natural, lifelike sound Advanced acoustic design reduces SPL levels to the ear drum by up to 40% (3-4dB), providing the same perceived loudness but with less fatigue ULE technology with MU metal shielding reduces radiation by up to 98% as compared to ordinary headphones 40mm titanium-plated Mylar driver for clear, precise sound that is well suited for mixing, mastering and critical listening Includes zippered hard case, extra ear pads and cables, and demo CD