Multifunction Line Control: Volume/Line in/ Line out Output power: 18W*1+10W*2 Drive unit: 5"+??.5"+1.5"??2(magnetically shielded) S/N Ratio: ≥70dB IC: TDA2030*3 Importing Sensitity:Stereo input:460mV,AC-3input:150mV P.M.P.O.: 380W