If your notebook is equipped with a DVD player but only basic two-channel stereo, this external sound card could improve your listening experience. It connects to your PC or notebook via USB and endows it with 5.1 surround-sound outputs.

The Zalman External 5.1Ch USB Sound Card ZM-RSSC is about the size of a handheld computer. If you're using Windows XP, the Zalman will be automatically recognised as a generic USB audio device, allowing you to use all its functions without installing drivers. Windows 98, Me or 2000 users will need to install the supplied drivers as per the instructions.

There are three separate ports for you to attach a set of 5.1 speakers. Each has a manual volume control dial allowing you to balance each speaker to suit the environment. There's also a digital output for connecting to digital audio decoders.

The accompanying software is simple to use for controlling surround sound settings and testing your speakers. You can also increase the bass levels and change individual 5.1 speaker outputs. This is the most elegant, compact and economical USB audio solution we've seen and is really worth considering if your current set-up isn't up to scratch.

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