LK-684-2 Power @ 4 ohms RMS 150 watts Power @ 4 ohms PEAK 300 watts Loudspeaker:12” LF Driver and 1.35” Titanium HF Driver Built in MP3 player with USB input Microphone in with 1/4” input jack Line in with 1/4”&XLR input jack Frequency Range : 50Hz-18Khz Sensitivity : 97dB (1W/1M) Impedance : 4 ohm AC OPTIONS: 230V@50HZ & 115V@60HZ Dimensions : 430x580x310 Net Weight : 18kgs