Powerful 50mm magnet drivers</br>Max. power input: 1000mw</br>Frequency response: 20-20 KHz</br></br>Product Description</br></br>Blastking HP200Pro headphones deliver high quality serious sound for the professional DJ use. 50mm magnet drivers?? 20-20 KHz frequency response?? 1000mW max input?? 3.5mm Stereo mini-plug?? 6.3mm Stereo adapter plug and a 13ft / 4m cord</br><br/>http://www.amazon.com/gp/product/B00O7OXUC0