What's in the Box: 1 x K612 PRO Headphones 1 x 3.5mm (1/8-inch) to 6.3 mm (1/4”) screw-on adapter Description: Simple Purity K612 PRO 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 patented Varimotion diaphragm technology completes the unique sound of the K612 PRO. 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 Specifications Sensitivity (dB SPL/V @ 1 kHz): 101 Rated impedance (O): 120 Audio frequency bandwidth (Hz): 12 - 39500 Maximum input power (mW): 200 Cable(s) length (m): 3 Audio Interface Type: Stereo plug – 3.5mm (1/8-inch) with 6.3 mm (1/4”) screw-on adapter Gender: Male Contacts: 3-pin Interface finish: Gold Features Replaceable Earpads Open Over-ear Audio Specifications Maximum input power: 200 mW Audio frequency bandwidth: 12 - 39500 Hz Cable Fixed Application Studio Mixing Hi-Fi Listening Cup Style Open Dimensions Weight (oz): 8.4 Weight (g): 238