These things are according to the price perhaps just something just adequate for very small claims, to gamble games. What stands out as the first, is the intense hum as soon as you operate the notebook to the power supply. This is certainly not time. Second, the sound is not nearly linearly and therefore falls listening to music before flat. The boxes sound like they were made of cardboard. No bass, mushy middle, the highs are so corrosive that it hurts right at a somewhat higher volume. There were probably installed cheapest components. I have a brand-name manufacturers, on the other hand produce a low-cost compact stereo their approximately equal size boxes fantastic sound. Third: The specified nominal power never true in life when these things begin to tug at an early stage. Conclusion: Optical top, phonetically flop. Those who expect good sound for a small price, is clearly wrong here. Listening to music can be fully forgotten. Prefer to invest a little more money and buy two compact speakers or Hifiboxen that is worthwhile in any case.