You need to plug the wire to the other side if you find only one side is functional<br /><br /><br /><br />Model IP878<br />Type headset<br />Headset Type Headset<br />Wear the way headset<br />Headphone output audio communication equipment<br />Plug diameter of 3.5mm<br />Plug type Straight type<br />Whether wireless headset wired headset<br />There is no microphone<br />Principle of sound<br />Frequency response range 20-20000 (Hz)<br />Impedance 32 ( )<br />Sensitivity 100 (dB)<br />Distortion rate 0.01 (%)<br />Wire length 1.5 (m)<br />Horn diameter 40 ( mm)<br />Earplugs / Earmuffs<br />Headphone cable material TPE<br />Use HIFI headphones・ ordinary headphones・ MP3 headphones・ GM・ mobile phone headset・ voice headphones・ music headsets・ computer headset<br />