Sony MDR-V150 Monitor Series Headphones Connectivity Technology: Wired Supra-aural design and wide molded headband for comfort during long listening sessions 30mm driver units and a lightweight ferrite magnite provide full-range sound with deep bass Reversible earcups allow single-sided monitoring, for DJing applications, mono mix checking, etc. Fixed stereo miniplug for use with portable equipment; 1/4-inch phone plug for studio/audio equipment Frequency response: 18 Hz - 22 kHz