Neosonik's wireless speakers are not typical. First of all, they contain high-end drivers and woofer, encased in a wood cabinet with a powerful monoblock amplifier. In addition, since the signal is transmitted from the Preamp/Controller/Processor to the speaker in digital form, all of the need digital-to-analog conversion is done within the speaker cabinet, minimizing audio artifacts.
Although the speakers pictured are floor standing, Neosonik also offers smaller bookshelf-sized units (that are mounted stands) and also offers a wireless subwoofer for full home theater setups.
The price of a full 5.1 channel system is estimated at about $10,000 dollars, which may seem expensive, until you realize that all the amplication is built into each speaker, instead of the consumer having to spend another "chunk of change" for external monoblock amplifiers or a surround surround amplifier.
For more technical details on Neosonik Wireless Audio and Video Technology, check out the Neosonik Website