Summary: It seems as if these portable speakers would be better used as stationary speakers. They are bulkier than other portable speakers, and the two separate units with the cord could be annoying to carry around. The additional controls on the left speaker could also be cumbersome for someone who just wants to play some quick tunes. They can play a good range of sound, but cannot capture low levels of bass.
Pros: The Sony SRS-M50 come with an optional AC adaptor in case you run out of batteries.