2.1: Includes 2 main speakers (left & right) and 1 subwoofer for bass. An ideal, compact choice for improving TV sound and listening to music without many cables.
5: Includes 5 speakers (center, 2 front, 2 surround) without a separate subwoofer. It offers a surround experience for movies, relying on the main speakers for low frequencies.
5.1: The classic surround setup with 5 speakers and 1 standalone subwoofer. It offers a full, lifelike cinematic sound experience with deep bass and clear dialogue.
Dolby Atmos: This is advanced technology that focuses on providing dynamic sound. When watching a movie or video, 3D sound gives you the feeling that you are in the middle of the action!