active speaker setup for samsung galaxy s3

Forgive me if this is a dumb question, but I just picked up a samsung galaxy s3 smart phone and I have a docking station/charger for it. The docking station has an audio out...is there any decent option for a portable set of active speakers that can utilize the smart phone output(either through the docking station output or directly from the phone via the headphone jack)? This won't be replacing my home system anytime soon..it's just something to use while traveling.

thx..