Altec Lansing VS2421 3-Piece Computer Speakers Audio technology is really making big strides, and it’s obvious here. The Altec Lansing VS2421 is an incredibly compact, value-priced system that gets its powerful, full-spectrum sound from custom-engineered, dual 2.5” speakers, plus a thin yet powerful 5.25” subwoofer that fits easily under your desk. The system’s size is ideal for small spaces – and you can even mount the satellites on your wall. Controls are right on the front of the speaker. A handy headphone jack is right nearby, and thanks to a microphone built into the right satellite, you can use the VS2421 for internet communications. And there’s even a secondary input jack that lets you connect your MP3 or CD player while still linked to your PC.