Designed for both advanced & amateur DJs, they provide high-quality sound reproduction & excellent listening comfort. Sporting a shape similar to the professional HDP DJ-Pro M1001 version, the HDP DJ-Adv G501 model is distinguished by its black lacquer finish & green highlighting elements. Its pivoting ear components (with 3 axes of rotation) let the wearer preview tracks with just one ear, & allow for easy folding & transportation. Drivers tailored for analytic listening: great for DJ monitoring, studio & production 102 d B at 1 m W sensitivity: enough decibels to preview even close to PA speakers 32 ohm drivers: strong playback level on any audio output 10 Hz-25k Hz: wide frequency bandwidth, to monitor any audible frequency 50 mm. diameter drivers: clear playback for deep bass response. Stylish design. They usher in Hercules&8217; signature design featuring a continuous arc from one earpiece to the other, to avoid pressure on the user&8217;s head, while at the same time perfectly shielding the DJ from external sounds. in addition, their large ear-cups feature the same distinctive relief found on the jog wheels of Hercules&8217; range of DJ controllers. With their black color emphasized by green lines, the headphones&8217; provide a stylish, sleek look that has been designed with all head sizes in mind. Folding & mobility.