The DJ-2000 Closed Ear DJ Headphone utilizes huge 54mm drivers to pump ultra-phat bass, rich mids, and crisp clear highs with a closed-ear design for maximum noise isolationWith greatest power handling capacity and effciency for very loud volumes, these are all you need at the turntable, console, or personal rig. Multi-position 90 degree rotating ear cups allow for single-sided or shoulder rest wear, plus lightweight body with wide adjustable padded headband and soft, tear-resistant ear cushions for unmatched comfort and fit. 3 ½ Inches tangle-resistant coiled cable extends to 11 feet for greatest mobility. Gold-plated stereo 3.5mm mini-plug with locking ¼ Inches adapter. Stereo/mono switch for single-sided listening. Foldable joint design for easy packing. 60 Ohms nominal impedance, 10-20,000Hz response. Nady Systems has been designing, manufacturing, and marketing wireless microphones since 1976. One of the first wireless innovators, Nady has sold millions of wireless systems worldwide, and continues to provide some of the most innovative/ highest performing products on the market at the most competitive prices.