The amp is just for you to hear yourself. I sometimes mic the amp, but that is secondary to a DI (Pro48 or J48) off the bass, as I've yet to find the mic useful indoors, as the amp has always been more than loud enough
There's a little SWR single 12" that sounds pretty good - I forget the model - it has a blue front panel.
The Phil Jones amps are said to be very good - and loud - for their size.