After I moved to Europe I needed a bass combo that I can take by bike and public transport. I'm a jazz musician, and this replaces my GK MB150-S which I used in the US for many years (and transported by car).
I haven't played a club with the BG-120 yet, but the sound at home is terrific with all my basses. It even sounds acceptable amplifying my archtop guitar, so I may use it for for guitar gigs too. The volume seems more than adequate for jazz gigs and is certainly sufficient for use as a stage monitor for louder gigs.
The size and weight are practical for the bike or a long walk, and the soft case is a perfect fit.