A Home Theater in a Box will improve your movie experience on any TV. It's no wonder why Home Theaters have become so popular. The Panasonic SCH-T56 5.1 Home Theater in a Box includes VIERA Link HDAVI Control, HDMI connection, and Wireless speakers(adapter sold seperately). Panasonic offers top of the line sound quality which sounds professional and crisp; you feel as if you?re sitting in an actual movie theater. Surround sound, using multi-channel audio, encompasses a range of techniques for enriching (expanding and deepening) the sound reproduction quality, of an audio source, with additional audio channels reproduced via additional, discrete speakers. The three-dimensional (3D) sphere of human hearing can be virtually achieved with audio channels above and below the listener. The descriptions of surround sound specifications below distinguish between the number of discrete channels encoded in the original signal and the number of channels reproduced for playback. The number of channels reproduced for playback can be changed by using matrix decoding. A distinction is also made between the number of channels reproduced for playback and the number of speakers used to reproduce (each channel may refer to a group of speakers). The graphics to the right of each specification description represent the number of channels, not the number of speakers. This notation, e.g. "5.1", reflects the number of full range channels; including a ".1" to reflect the limited range of the LFE channel.