Some even include a subwoofer and may come with wireless rear speakers for a true surround sound experience with fewer pieces of equipment than you'd find in a component system. (polkaudio.com)
With fewer pieces in your closet I think it allows you to save money, time and really utilize what you have! (lowstoluxe.com)
Not only does it come with fewer pieces, but it also doesn't have the ability to change bits. (geekwrapped.com)