How is luxury defined in the world of consumer electronics? What convinces the ultra-rich to spend more than the average consumer on home stereo systems and TVs? The latest innovations are often offered at exorbitant prices, so that being on the very cutting edge of technology becomes a type of luxury in itself. As a result, the very notion of what makes a consumer electronics product "luxurious" tends to evolve just as rapidly as gadget makers' technological potential. Below is a snapshot of the market today, highlighting some of the current trends in the high-end consumer electronics sector.