20 W RMS total output power
This system has 20 W RMS total output power. RMS refers to Root Mean Square, which is a typical measurement of audio power, or rather, the electrical power transferred from an audio amplifier to a loudspeaker, which is measured in watts. The amount of electrical power delivered to the loudspeaker and its sensitivity determine the sound power that is generated. The higher the wattage, the better the sound power emitted by the speaker.