Home theater - a set of equipment that reproduces video and audio content. It allows to achieve high quality of a sound and the image, and also "effect of presence", reminding a theatrical. Perfect for watching movies with spectacular special effects, sports and concerts.
Home theater consists of such devices:
Player - plays video and sound from disks and other media;
AV receiver - converts a digital signal into an analog signal to transfer it to acoustics, and also amplifies it;
Multi-channel speaker system with a subwoofer - reproduces the audio signal;
LCD TV (sometimes plasma) - displays a picture.