AmpliVox has portable pa systems ranging from 5 watts to 250 watts...which begs the question:
What is a watt?
The watt (pronounced /ˈwɒt/ wot; symbol: W) is a derived unit of power in the International System of Units (SI), named after the Scottish engineer James Watt (1736–1819). The unit, defined as one joule per second, measures the rate of energy conversion.
The watt is a unit of power. It is a Newton meter per second, or can be given as a joule per second.