http://www.epinions.com/content_186980732548
12 watts, 21 lbs. uses up batteries fast. Probably really does deliver 12 watts.
That is a lot of power for a portable.
You should carry it around in a bowling bag or some kind of protective case.
21 lbs and plastic - don't drop it.
A real plus for this unit is that a high output microphone can be plugged into the guitar
input. Bring it with you when/if selecting a microphone. Try high and low impedance mics to find out what will work best with it.