Superlux HD-330 Pro 150 Ohm, Studio Headphones, Circumaural, Semi-open, Dynamic, Driver: 40 mm, Neodymium magnets, Max sound pressure level: 93 dB, Impedance: 150 Ohm, Frequency range: 10 – 30,000 Hz, One-sided cable routing, Flat 2.5 m long cable, Weight: 315 g, Includes adapter to 6.3 mm stereo jack