Ultrasone | 951-678-9091 | www.ultrasone.com Ultrasone has premiered the first headphone in its PRO Series with S-Logic Plus technology: the PRO 900. This new technology reportedly results in an impartial acoustic feeling that allows the listener even more of a spacious tonal perception. The headphone contains MU-metal shielding (ULE technology) that, according to the company, reduces the amount of radiation directed to the listener by up to 98 percent. The new headphone also contains Ultrasone's patented S-Logic Plus technology for reduced sound pressure on the eardrum and improved tonal perception. The PRO 900 comes in a hardsided carrying case along with two removable cables (one spiral and one straight) and spare ear pads.