Beyerdynamic DT-231-PRO Closed Lightweight Headphone for Studio and Stage Applications, 32 Ohms Closed lightweight headphone For studio and stage applications 32 ohms Powerful bass reflex system Soft, replaceable ear pads Lightweight, closed-type headphone for portable audio or home use Produces powerful bass and balanced mid and high frequencies 20 Hz to 18 kHz frequency response; soft replaceable ear pads 3-meter single-sided connecting cable with 1/8-inch stereo mini jack Includes 1/4-inch adapter; 32 ohm impedance; 2-year warranty