With a 2.0 or 2.1 set, you listen to music or improve the sound of your TV. A 2-channel set ensures that you hear different instruments and sounds from the left than from the right. This makes the sound more spacious. Do you want to improve the sound of your TV? Choose a 2.0 soundbar or combine a set of HiFi speakers with an AV receiver. You can listen to music with a set of HiFi speakers that you connect to an amplifier or with a pair of WiFi speakers. Are you looking for a simple solution? Choose a stereo set. You can enjoy a solid bass when you put together a 2.1 set. The 1 behind the dot means that a subwoofer is also part of the set.