... subwoofer, Max output power: 200W, R.M.S: 2x50W, High-efficiency digital amplifier, low power consumption. subwooferMax output power: 200WR.M ... .S.(4Ω, 1%THD): 2x50WHigh-efficiency digital amplifier, low power consumptionDuralumin wired remote7"x10" bullet-shaped ... musicFrequency range: 23Hz~160HzComplete wire set provided subwoofer with high-efficiency digital amplifier (sw828b)