Hercules Black 4780514 1/8/3.5 mm stereo mini-jack plug 1/4/6.35 mm stereo jack adapter Connector Supra-aural HDP DJ-Adv G501 DJ Headphones Type: Stereo / DJ Driver Unit: 1.97/50 mm driver diameter Frequency Response: 10Hz-25KHz Input Impedance: 32 ohms Sensitivity: 102 dB/mW Cord Length: 6.5'/2 m cable