Ultra10

Now with this device you will be able to create 5.1 surround sound using 2.1 stereo sound. The ultimate Sizen iM10 is able to upscale the regular stereo sound into a 5.1 surround experience. It apparently relies on a bass and treble reinforcement technology known as AST coupled with another technology called DBEX to properly balance the sound. The iM10 uses a built-in lithium polymer rechargeable battery, and on a single 2.5 hour charge you can expect to get about 7.5 hours of use. It features a mini-USB jack allowing it to be charged from a laptop if needed. It also has 3 different operating modes for regular stereo sound or 2 x 5.1 modes customized for music or movie playback. It will be available in Japan in 6 different colors for about $90.