Whether you're a pro or a hobbyist, the Superlux HD681 Professional Monitoring Headphones are built with the true audiophile in mind. With full-sized, ergonomically designed earmuffs, they deliver dynamic, crystal-clear sound with perfect balance and a powerful bass punch for the ultimate rock music experience. Meanwhile, their deep low frequency capabilities provide superior sound for classical music, while their flat extended frequency captures vibrant pop and vocals. The self-adjusting headband offers the ideal fit, and its durable construction allows twisting for use as a single-ear headphone. The headphones are equipped with an 8.2-foot non-detachable cable with 3.5 mm mini plug. Accessories include a screw-on stereo adapter and a soft cloth storage pouch.