The Roland Micro cube is a tiny little amp that can run on either AC power or six AA batteries. I was never a fan of modeling amps, but this tiny two-watt solid state modeling amp really surprised me.
The amp is built like a tank. I’ve not tried this, but I would be willing to be that I could toss it down a flight of stairs and it would still work. Considering that this is the type of amp that you might literally throw into the back seat of a car, being able to withstand some abuse is a pretty good feature. Since it’s less than 10 inches on it’s longest side, and weighs just over seven pounds, there’s a good chance it could be taken along on many trips.