Professional Reference Stereo Studio HeadphonesSIMPLE PURITY natural sound imaging for professional monitoringK612PRO headphones are reference open, over-ear phones that deliver natural sound imaging for professional monitoring. The advanced open technology offers comfort for long working sessions and a full, spacious sound. AKG's patented Varimotion diaphragm technology completes the unique sound of the K612PRO.Obvious features such as the self-adjusting real leather headband, aluminum arches and solid rivets not only provide a lightweight, maximum comfort fit, but also reinforce the quality AKG has provided to studio engineers for decades.Features: Over-ear design for maximum wearing comfort for long work sessions Sophisticated open technology for spacious and airy sound without compromise Patented Varimotion Diaphragm Technology for high-quality imaging and sound Genuine self-adjusting leather headband for automatic fit and maximum wearing comfort Computer-optimized neodymium magnets for ultra-low transducer distortion Specifications: General Headphone type: open Audio Frequency bandwidth: 12 to 39500 Hz Sensitivity headphones: 101 dB SPL/V Max. Input Power: 200 mW Rated Impedance: 120 Ohms Earpads Detachable cable: no Cable Length: 3 m Audio Interface Type: Screw-on Jack Combo (1/4" and 1/8") Gender: Male Contacts: 3-pin Interface Finish: Gold Dimensions / Weight Net Weight: 238 g