The American Audio HP 550 DJ Headphones are rugged, cost effective and well suited for DJs and general music monitoring. The large 57mm drivers feature a hermetically sealed enclosure for maximum isolation. The headphones offer a power input of 3,500mW for monitoring high sound levels without noise or distortion. The HP 550s are easily folded for storage and transport, and universal swivel joints allow DJs the ability with a single ear. There are an extra set of ear pads included, as well as straight and right angle, 1/8" mini to 1/4" phone adapters.