LATEST ADDITIONS

At $2,800, the least expensive Vaio PC in Sony's MX desktop line doesn't seem like much of a bargain these days, even for a 1.7-GHz, Pentium 4 with an 80-gigabyte (GB) hard drive, 512 megabytes (MB) of memory, the exciting "home" version of Windows XP, and two better-than-average speakers (the 15-inch Sony LCD monitor shown is $600 extra).

Harman Kardon You'll feel surrounded by surround sound choices with Harman Kardon's AVR 520. The receiver decodes Dolby Digital and DTS 5.1- and 6.1-channel soundtracks, including DTS-ES Discrete. You'll need an outboard amp if you have one or two back surround speakers, though, as there are only five powered channels, rated to deliver 75 watts each into 8 ohms.

MPEG-4 is getting plenty of attention from high-tech companies these days. On March 27, a joint venture involving the technology was announced in Tokyo by seven major electronics and technology companies.