You may be owing a great laptop with HD display but what is the use if you miss the theatre sound, while watching a movie on it. The only option till date was to attach a portable speaker set or, a stereo headphones. These will never give you the cinematic experience, you are looking for. Iogear Theatre sound experience has come with a solution.
This is actually a USB audio adapter and it will override your inbuilt sound card when you plug this in.
When you will watch a movie and plug in a pair of decent quality headphone, you can appreciate its audio processing quality of 5.1 channel audio.It reproduce the dimension of sound nicely, as if you are in front of a real HT system. The bass even are also pretty nice. You may not get so good effect if you use a pair of in-ear head phone. The size of the driver does matter.
For two channel stereo movies, this may not give you the surround sound effect, which is natural, but the dialogues will be much clearer than if you listen it directly on headphones.