The CORTEX CHP-2500 Professional Monitoring Headphones provide high-quality accurate sound reproduction for the most demanding DJ, audiophile or critic. With low distortion and a frequency response of 16Hz -20kHz, deep bass as well as crisp highs are easily reproduced. These comfortable, durable and lightweight headphones will offer long term performance, satisfaction and comfort. The rotating ear-cup allows for variable positioning including single sided or shoulder rest wearing and the extra long (over 13 feet) non -tangle cable allows you to move about freely.