i have a 87 red knob champ 12. great bedroom rig. i've seen solo guys gig with them, and i have taken it to band practice, but with a full kit, it is just a little bit too quiet, but it actually worked ok for practice, just didn't have any more headroom.
i think the roland micro cube would be great, too.
or.... an sms preamp with small studio monitors, or an alembic f2b with small studio monitors, or monitor. i have small studio monitors (almost computer speaker size) and have used a digitech valve fx preamp with them. the digitech valve fx had some god awful 90's digital effects on it, but some useful ones, although in general, it sounded like garbage and i would never recommend it. it just came with a skb case and power amp i was buying.
like waves against the bandstand dancers broke