It has been buying for days these horns Logitech LS21, the sound is quite good and the power also is good, but podria for being better, his to subwoofer gives a good sound him of serious, since it counts on an exit inferior; it has controls of audio and ignition/extinguished besides an entrance for earpieces that assumes that it is so that you do not have to disconnect the horns of your computer, but only with connecting your audiophones you can have but privacy. Something that I like is that not to have as much loose cable and hindering (as usually we have) back of each one of the two horns there is a space to coil the cable and thus not to have so many cables that can be very annoying. Advantages Great quality of audio. Subwoofer with exit inferior. Laptop, computer, cellular, iPod or reproducer MP3 with entrance for earpieces of 3,5 mm can be connected to any. Disadvantages They are not nothing portable. They are estorbosas for being 4 separated things (2 horns, to subwoofer and the gain control), so I recommend to have them in a fixed place. Price In Mexico the price is of between 500 – 600 (although buy I it in radioshack to promotion like 460 pesos). Comparison with other products Before buying these horns I looked for iPod as the one of above, also of logitech that are the S125i model, but the price in which they were was of $640 more or less, and although it did not become, the horns expensive which it buys are but cheap, mainly because encontre in promotion; furthermore when I saw this horn for iPod me hiceron very small and definitively I believe that the quality of auido of the horns that it buys is far better, although this horn for iPod is very small and portable, preferi to choose better quality of sound. For but information it visits: Original author and source of the article.