I see that Fishman makes a similar one - SA220 Solo Performance System - wonder how that sounds. They are  expensive

As corny as it seems, BOSE has been doing audio magic with small speakers for a long time. They are really experienced with it.
 
Fishman is probably paying the guys in China who are making the BOSE for some back door insider info. I'd probably stick with the BOSE but that's just a hunch... not based on experience.
 
best regards,
mike

In checking things out since writing this post, it looks like the Roland series of acoustic amps are nice for small venue. One has a mic channel that has phantom for a condenser vocal mic...digital fx - chorus and verb.