AKG K240S Professional Open Back Headphones The AKG 240S is the Studio version of the classic hi-fi stereo headphones. Utilising XXL speakers with Varimotion diaphragms gives the K240S higher sensitivity, a wider dynamic range, and higher sound levels. Other features include semi-open earphones, a solid bass range, clear highs, and excellent comfort. Features •Also connects to portable equipment (CD players, DAT recorders, notebook computers, etc.) •55 ohms impedance, plug-in cable •Self-adjusting headband for optimum fit •Single cable for ease of use •Semi-open, circumaural design Specifications •Type: Semi-Open, Dynamic Headphones, Circumaural •Sensitivity: 91 dB/mW, 104 dB/V •Frequency Range: 15 to 25,000 Hz •Rated Impedance: 55 ohms •THD: <0,3 % •Max. Input Power: 200 mW •Connector: Gold plated stereo mini jack •Adapter: Stereo gold plated mini to 1/4" screw-on adapter jack •Net weight (without cable): 240 g (8.5 oz) •Special features: Plug-in cable