I'd say it sounds good for its price range - nothing stellar, but good enough. The battery's capacity is very generous. The features are pretty good. It can be a bit loud when necessary. It's not as sturdy as pro PA equipment, but I wouldn't call it fragile either. It will distort when pushed too hard, but not in a way that feels like you're damaging it.
In mine, there's a tiny bit of hum coming from the transformer (not through the speaker, but through the panel) when plugged into the mains), even when switched off. It's not really an issue, except I wouldn't keep it plugged near my bed at night.