K 271 MK II - Professional circumaural hi-fi stereo studio headphones - Self-adjusting headband for optimum fit - Patented Varimotion speakers - High noise attenuation - For onstage and studio use - Automute feature mutes headphones when they are taken off - Leatherette and additional velvet ear pads - Single-sided, detachable 3 m cable and additional 5 m coiled cableThe newly designed AKG legend, K 271 MK II combines the benefits of AKG s circumaural design for extreme comfort and a closed-back design for maximum isolation from ambient noise. Thanks to its XXL transducers, the K 271 MK II sounds clean, smooth and very rich.The K 271 MK II is the perfect choice for any application where sonic bleed could cause problems such as broadcast work.Another important feature of the K 271 MK II is the addition of a switch in the headband that mutes the audio just as soon as the headphones are taken off. Type closed-back, dynamic headphonesSensitivity 91 dB/mW, 104 dB/VFrequency range 16 to 28,000 HzRated impedance 55 ohmsMax. input power 200 mWEarpads leatherette und velvetCable 3 m single-sided and 5 m coiled cable (99,9% oxygen-free); plug-in cable on headphones (mini-XLR connector)Connector gold plated stereo mini jackAdapter gold plated 1/8 to 1/4 screw-on adapterNet weight (without cable) 240 g (8.5 oz.)Shipping weight 550 g (19.4 oz.)