It can be said that in the information explosion now, computers have appeared in around, from the rural areas to the remote islands, from the "old farmers" to children have just say " a b" also know and use computer proficiently… and so, the computer has become a close friend of all. Not only in work but also it help us forget worries in life with the tone of a melodious music track, lively sounds of an action film, the exciting and interesting moments in the kind of action or adventure game ... In order to get those “feeling", the famous companies in the field of speaker production as Alteclansing, Bose, Creative, SoundMax, ... has been launched the speakers are very diversified and abundant from the system 2.0, 2.1, 4.1 ; 5.1 or to a line of Home Theater high-level product with integrated technology for advanced audio processing gives us the emotional music is honest and sophisticated. At first looks, most of people have a “doubt "about the performance capabilities of the "very small" speaker. When performance, however, they had made listeners surprise for the ability to express bass sound clearly, mid sound emotionally, melody treble ... In the past, in order to own an audio device at home, you must take a lot of effort and money. But now, you can still bring the theater to home with an extremely reasonable price, and it is entirely consistent with the majority of people love music. Depending on your needs, if you only need a pair of speaker to listen while working, you just buy a set of 2.0 or 2.1; but if you want to enjoy the imposing sounds of an action film, you must select the Home Theater 5.1 which has integrated DTS technology (curve audio effect). With the criteria of the lively sound, modern design, simple installation ... in just a few "gently" operations, you can be sunk in the melodious and fanciful feeling of the colorful entertainment world, then to return to reality with a fresh spirit and reckless ideas waiting in future.