Summary: No, they can't compete witha a 12" BOSE speaker, but they work great when I plug in my notebook at work. Reasonably priced, and sound pretty good for their size. USB powered, so no batteries necessary.
Summary: At its highest volume, I can barely hear the speakers. I regret having purchased them. I didn't use them immediately, and by the time I did, I felt it was too late to return them. Don't waste your money.
Summary: Pros- For it's size I was impressed. It uses the power of a computer port to drive an amplifier which means you don't need batteries or a wall wart for power. It has an on/off and adjustable tone and volume. Cons- It uses one of your USB ports if your limited for ports.