Beyerdynamic DT 770 Pro - Circumaural Closed Back Stereo Studio Headphones - 80 OhmThis is a closed dynamic headphone and was designed for critical music and sound monitoring in an open environment. The transducers are fitted to adjustable yokes which should be positioned to fully enclose the ear. This will provide the optimum ear speaker position for accurate sound monitoring. The coiled cord can be extended to a maximum of 3 m and is terminated with a high quality gold plated mini jack and a 1 4 stereo jack adapter. Features