Siege Audio ELEVEN Stereo Headphones (White) (Discontinued by Manufacturer) Ten is so yesterday. The ELEVEN is one louder and a thousand times better Professional DJ Ready Design Removable cable design keeps you from getting tangled. Unique USB jack keeps you from yanking the cable out at your gig Driver: Full Spectrum Sound 57mm, Frequency Response: 16-20kHz, Sensitivity: 110dB Professional DJ ready design, 57MM tuned sound drivers, collapsible for easy travel, modular cable design Impedance: 32 Ohms, Cord length: 1.5 meters + modular design