Utrasone PRO 650   (Discontinued by Manufacturer) S-Logic(TM) Natural Surround Sound for a more natural, lifelike sound Safer listening, less fatigue - SPL levels to the ear drum are 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% as compared to ordinary headphones 40mm Gold-plated Mylar for rich, warm sound great for almost any use in the studio or on stage Zippered hard case, extra ear pads and cables and demo CD included