Yes the Philips MMS321 2.0 is a 2.0 system
You can hook up any multiple 2.0 systems for faux surround sound with an adapter and set eq on your front speakers with clearer midrange and highs, and the back speakers with more low/mids. Set the sub wherever. Which is crudely what surround sound does anyway. You could even buy dedicated sets of different speakers with more bass on certain ones and more highs on others. The philips works with any soundcard I am aware of, you will need a 10 band equalizer at least (unless you like that loud little-bass sound, I don't care for it), which most cards or onboard driver have or are available. These speakers begin bass frequencies at 50hz, impressive for the little drivers and bass resonator. I have tested it at 40hz so they're better than advertised. Tweeters go all the way up to 200khz. To get the most out of them use a 15 band eq. There is no other 2.0 in existence to have such a wide range of frequencies at these power levels, if you use it as quiet-normal desktop speakers then they have the most definition than anyone else. My pos on board real tek only has 10 band equalizer.
The stock settings are too much for the 200-400 HZ, it really thumps the bass out of the box so take a little power away on this ratio. Add more to the mid and high ranges (where these things shine) and you have a better system than anything out there with very decent bass. The noise ratio when they're turned up to max (80watts) is absolutely nill with a well tuned eq. Very high quality sound
Again add separate sub/amp for real bass. I can't recommend these anymore than I have, 40 watts/channel, comes with its own 80watt amp. If you want more out of the midrange you can always upgrade to aftermarket amp. The tweeter seems to have more room for juice also.
My only complaint is the left speaker needs a better ground. If you're familiar with amps you know what I mean. The tiny 3.5mm cord running from the main speaker to auxiliary sends a very slight hum and it needs a bigger ground. Though it isnt noticeable from 2 feet away (it's just static ground interference, not speaker noise it goes away when power ie sound is sent to the speakers)