The good: The Panasonic SC-HT640W is an affordable home-theater-in-a-box system highlighted by a wireless rear surround speaker. It offers a fairly compact receiver/five-disc DVD changer, wall-mountable front minispeakers, and two Music Port jacks for quick and easy hookup to your portable music player.
The bad: While the single-box design of the rear speakers eliminates all the wires except a power cord, the resulting sound isn't as spacious as that of conventionally placed surround speakers--and the wireless signal may blink out on occasion. And like most bargain, all-in-one, home-theater systems, the Panasonic SC-HT640W offers only meager connections for external A/V devices.
The bottom line: A unique wireless rear speaker makes the Panasonic SC-HT640W an impressive value for anyone in the market for a sub-$300 home-theater system.
I give it a 7 out of 10
There are much better systems out there for the same price, look at-