We bought the computer speakers in order to connect it to an Acer S7 Ultrabook and thus achieve a higher volume, a larger volume and clarity of the entire sound, which does not provide the built-in speaker of Ultrabooks (although small for a Ultrabook are quite good). We also wanted speakers that are also the way go on a trip, in the garden or on the balcony or just as he met with friends in the park ... easily, can connect to the Ultrabook quickly and without a lot of clutter, without being tied to a separate power source to be. Another point was that we wanted speakers that are not easy to carry too large backpack and look reasonably well and still have a clean and uncluttered sound and not only noise and rumkratzen. So all of our criteria have led us to the Logitech Z120. Now for the test (on a Acer S7 Ultrabook in areas: films, videos, music and general noise when using the PC as apply): The speakers come in a sufficient from the size box, therefore so you this also can carry well and still safely packed are. Connecting is easy and goes without much cable tangle of equip - 3.5mm jack for audio transmission, then USB connection for power supply in and off you go. Turn the knob on the A-Ausschwelle and the sound goes. The knob can be infinitely varied. Ahead you should mention that we must not expect too much, because there are at least small speakers with a USB power supply. And have been made for mobile use and for small expansion of poor laptop sound and not in order to fill a room with music or to accomplish greater Klangwunder so. The first impression but we carved almost from the socks ... Believe it or not, but from these small almost 10 speakers comes this sound. The volume is more than perfectly adequate ... We expected even less. The quality of the sound is cleaner than we expected and the high, mid and lows are very well balanced. The highs are not overridden or listen to scratchy. The mids are clear and clean. Although the depths account for nearly, but are sufficiently present for this size and are also not objective and task speakers. The sound we have with the Dolby software on Acer S7 Ultrabook is installed, a little refined and adapted to speakers using the EQ. They are therefore suitable for height ratio not only for watching videos and movies, for example, in the hotel without TV or with friends out in the open, but also for listening to music in excellent quality and volume. They also see next to the white Ultrabook out really great. For this purpose they are robust and stable, without to be too hard to be. This 2.0 speaker have the best value for money that we have seen so far. Small but Great job Logitech !!!