In a delightful change of pace from the home audio industry's push for an.1 home-theater system, many of the top manufacturers are adopting a "less is more" ethic, producing simpler sound systems that simulate 5.1 surround sound with as few as 2 speakers--case in point: Sharp's SD-SP10. Sharp aims to outshrink the 2.1 competition with 1-bit digital amplifier technology. The result: Sharp is promising a product that's two-thirds the size of analog amps, while running at half the power and one-fifth the temperature. Sound good? Find out for yourself in April when it hits stores for $350.