So if you want to use them on a device like a smartphone or MP3 player then get something else
BODYBAGBILL "THE COOL REVIEW", Amazon
9 March 2015
Summary: These speakers don't have an external volume control...They operate using computer volume control. So if you want to use them on a device like a smartphone or MP3 player then get something else. The sound is far below the quality of other USB powered speakers I've had in the past. NOT IMPRESSED!
Summary: Not very loud. Quality is fine but there is no volume control and they aren't much better than laptop internal speakers. I have Altec-Lancing Model 19 studio monitors, which are the best speakers ever; so I expected a lot more from these.
Summary: Words cannot fully express the constant hassle I've faced with these "portable" speakers. If your laptop is always stationary you might not have the worst experience but if you'll be moving your laptop around (like most laptops are meant to) then you will be aggravated by the unintuitive design.
Summary: Reason for purchase was to add speakers for presentations in a small conference room (seats about 8 people). I saw many solutions for around $20, but decided to pay $50 in hopes of getting better quality (usually the case w/ Altec Lansing).
Summary: The speakers look good. They clip together if you wish to make a sound bar. However they make a make a nasty cracking noise when you start or stop video. The problem occurs on both my computers. I couldn't find a solution to this on the internet. When playing, the sound quality was only adequate.
Summary: Just to make it clear - I haven't bought these speakers. I was tempted too, but in the product description nowhere does it state the output in Watts - I'm not bothered how LOUD thy are. I had to make a tedious internet search to discover that they're 5 Watts. Obviously, that's not very impressive.