Convenient, cheap and greatly improves laptop sound, but not the best sounding amplified speakers, even for under £20.
Pros:
+ Bargain price on Amazon vs alternatives
+ Ok sound, simple to fit/install
+ Good-quality built in mic, for skype etc
Cons:
- they could clip onto the screen better
- sound not as good as some (Logitech X-140)
Review:
After much looking at USB soundbars and other systems (USB powered or powered and connected via USB) for my laptop, i picked these. The sound is good, but, if you want to spend no more than £20, I think the Logitech X-140s can't be beat. These Philips SPA6200 are acceptable and a big improvement on my laptop's built-in speakers, but don't come close to the X-140s, which have a relaxed, refined, deep hi-fi sound, whereas SPA6200s are a bit shrill and have a slight boom.
SPA6200s are fine for listening to podcasts, general sound duties and are great for skype (built-in mic seems good quality). Its very handy to be able to move the laptop and take the sound with you - no trailing cables to speakers or connection to mains power.
They clip to the side/top of a laptop screen but wouldn't clip onto a thicker desktop monitor, although they can stand (horizontally) on a desk. They do add a little weight to a laptop screen, so if your screen already pivots a bit freely, you might find it tips over holding these speakers. The speakers are too easily knocked off the screen as the clips don't grip brilliantly (on my screen at least).
TIP: I found best sound quality comes from selecting the 'bass management' enhancement feature, and selecting the boost level to 9db (at 100hz). That makes the sound a bit richer without becoming boomy. The soundcard built-into the speaker also gives you virtual surround, loudness and room-correction options.