The JTS HP-525 Studio Headphones offer a closed-back circum-aural design blocking out all of the unwanted sound, making these headphones a great selection for studio quality monitoring in high-noise environments, such as DJ/Disco use, as well as live sound situations, plus pro and project studio use. If that is not enough the closed back HP525 offers dynamic stereo powered by a beefy yet lightweight neodymium-ferrous rare earth magnet system with lightweight copper-clad aluminum voice coils. The adjustable frame allows for a comfortable fit and hours of wear without fatigue. The coiled cord is gold-plated mini stereo phone plug, and a 1/4" phone adaptor Super thin 40mm diaphragm drivers powered by the neodymium magnet a full range 20-20,000 Hz frequency response, letting you hear all the highs and lows!