http://www.amazon.com/Altec-Lansing-...2361493&sr=8-1

I have one of the Altec Lansing IM3's that I bought about 3 years ago. This thing is rock solid, highly portable, runs on either batteries or AC power, and includes every international travel adapter you'll need. Plus, it'll charge your iPod, and also has an aux-in port for plugging your laptop in when you want to watch movies in your hotel room, perhaps with a travel partner.

I don't know how I would've coped for so many hotel nights without this thing.

Highly recommended.