Right front view of the Sony SRS XB30 speaker.
The SRS XB30 Sony Bluetooth speaker is a small to medium power, desktop style unit with enough RMS watts to fill a common household size room with full sounding tunes.
But what does the number of watts a wireless speaker has, tell us about how good it is? Firstly, the watt is a measure of how much power the speaker consumes or outputs. Plus, this metric is a convenient comparison measure. E.g. Generally speaking, speakers with more watts of audio output tend to play louder than those with less. And while they do cost more, have bigger, heavier batteries and chargers, along with larger drivers and magnets, they nonetheless offer greater dynamic range, have a deeper bass response, and the models that do stereo offer typically a bigger soundstage and better imaging to listeners.
Thus in general, the more powerful the speaker, the better it sounds, even at lower volume. You get improved clarity due to higher accuracy reproduction of the bass, midrange, and treble musical content. More reserve power could mean less clipping distortion too. So, the speaker’s maximum watts RMS is a primary indicator of speaker quality and performance. And as such, this value is of great interest to audiophiles and novice listeners alike.
In this case, the Sony XB30, as a smaller wireless Bluetooth speaker, is a decently loud model for all the bigger it is. Its watts can fill a room with crystal clear music. See below for details on its power output.
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