Sony XB21 Watts Output, Input, Battery, Adapter

The SRS XB21 Sony Bluetooth speaker is a small to medium power, desktop style unit with sufficient output watts to fill a typical size room with full sounding tunes. But what do the watts a wireless speaker has, tell us about how good it is?  Firstly, the watt is a measure of how much power … Continue reading Sony XB21 Watts Output, Input, Battery, Adapter