professional amplifierTypeK8-F-2Mian channe30W+30W(80hn,20Hz-20KHz1%THD)Center channel15W(80hm,20Hz-20KHz1%THD)Surround channel15W(80hm,20Hz-20KHz2%THD)Input sensitinity20mvFrequency response20Hz-20KHz±5dBSingal to noise ratio76dBPower supportAC 220-240V/50Hz-60HzPlanescrub/smooth planeColorblack/silver Welcome OEM/ODM coorperation.