Yes, it works, I often left it running quietly in the garden when the neighbours were there.
Yes, the jbl sound is designed for a party and therefore lacks a bit of midrange and treble for your home use. if you are looking for a very clean sound, I recommend another music box.
If you can't compare the jbl with anything else, you won't notice that there are a few tones missing.
I compared it with an oa system (EY) and teufel air. I currently own one from hifonics, which is actually a big brand in the car sector.