Sonically, the boxes are very good. Top sound and the bass is fully acceptable for these boxes.
Unfortunately, these boxes provide a permanent buzzing sound paired with a noise of itself.
The noise and the hum is whether an audio source is connected. Even if all the cables are pulled up on the boxes that make boxing sounds. Single outlet, plug turn etc. everything has not helped. I have not given me more trouble, as this others have here desperate of the review writers.
I have previously had the Bose Companion 3. They had a minimal quiet noise which did not bother me and soft music was not audible.
In these boxes, it is a regrettable fact that the buzzing sound / noise combination drowned soft music. So unfortunately audible when you're sitting at your desk.
Sonically, I was convinced and would like to keep the boxes. But as I also like to listen to music quietly on the PC, this is not for me.
These are just my personal experience. If someone says here nothing to hear, he must have another component in the amplifier have. For most, this phenomenon seems to be as I have now seen it.
I hope I could help you with this review. If jmd. Even tips for other good 2.0 boxes has, please write in the comments. Thanks.