Semi-open headphones for audiophiles. They use TESLA technology and are hand made in Germany. They have a frequency range of 5 to 50,000 Hz, an impedance of 600 ohms, sensitivity of 102 db and maximum input power of 300 mW. They are equipped with dynamic speakers in Circumaural construction. Connection: Straight textile-covered connection cable with 1/4 “ stereo jack plug 3,5 mm lenght 3 m. includes hardcase and 6,3 mm jack adapter, Weight: 360 g