As another reviewer states here - these speakers aren't bad, but they aren't as great as the populace opinion would appear to suggest. The satellites are of limited use on their own; while they handle clean tone acoustics quite well, as the complexity of the sound picks up, so the sound quality begins to take a dive. It's a very similar story with the subwoofer. The unit seems inflexible, emitting a stifled roar when pushed rather than a rounded crisp attack. You can't adjust the crossover threshold sadly, you can only amplify the sound until it overpowers the satellites. I find I get the best sound by trimming in the sub just enough to pick up the lower tones, then using a digital EQ to beef up some of the mid-range. Not ideal, but it's mostly used for the odd MP3 and games on my console. I've also noticed the sound level wandering up & down of its own accord, curious; but given the limitations of the nasty digital source I'm tempted to forgive this.
Overall then; slightly better than average sound, good build quality with handy headphone output, but no aux input.