Studio headphones Dynamic, Open, Circumaural, STELLAR.45 driver, Impedance: 48 Ohm, Sound pressure level: @1 mW / 500 Hz 100 dB SPL, Frequency response: 5 - 40.000 Hz, Power rating: 100 mW, Max. input level : 30 mW, Distortion @ 1 mW 0.80% @ 100 Hz...