AKG K240 Studio Headphones feature a classic design that has become a standard in monitoring.Now, the new, 55-ohm version provides remarkably higher volume level when used with portable studios, keyboards, drum machines and other project studio gear. It's a professional level of performance for the home studio!Features include anintegrated semi-open airdesign with a highly accurate dynamic transducer for naturally open sound quality, and circumaural (around-the-ear) pads for hours of wearing comfort. Frequency range: 15 Hz to 25,000 Hz. Stereo (1/8-inch minijack and 1/4-inch) connections.AKG K240 Studio Features55 ohms impedance, plug-in cableSelf-adjusting headband for optimum fitSingle cable for ease of useSemi-open, circumaural designAKG'S MOST POPULAR PROFESSIONAL HEADPHONEA classic design which has become a standard in monitoring. Now with Varimotion XXL capsule for studio sound at home and for portable use.The 'integrated semi-open air' design incorporates a highly accurate dynamic transducer, and an acoustically tuned venting structure behind the element produces a naturally open sound quality. The circumaural (around-the-ear) pads are designed for hours of wearing comfort, while the steel-cable, self-adjusting headband construction and single-sided professional quality audio interconnect ensure extended reliability in demanding professional studio applications.Proven, popular, excellent - New, improved and even better.