The developmental target for the 3-SERIES haedphones was to create a product, which complies with the requirements of a High-End product, and at the same time amazes the listener with an impressive powerful sound reproduction- These headphones are engineered and optimized for mobile use-Features- Acoustical Principle - Closed- Nominal Impedance - Dynamic- Frequency Response - 6 - 26-000 Hz -10dB- Nominal Impedance - 16 - THD Harmonic Distortion - 0,06 1mW- Sound Pressure Level - 97 dB 1mW- Load Rating - 100 mW- Contact Pressure - 5 N- Weight wo cable - 133 g-- Connector - Straight Jack 3,5 mm- gold plated- Cable - Straight 1,1m SKU: MBDA001