A:Answer Hello Nickname,
The major differences between the HW-S60B Soundbar and the HW-S50B Soundbar are:
HW-S60B is a 5.0 Channel Soundbar with 200W of total power, the ability to connect using Wi-Fi and connect to the SmartThings App. The HW-S60B also has Alexa built-in, the ability to play Dolby Atmos content and Samsung's Active Voice Amplifier feature
The HW-S50B is a 3.0 Channel Soundbar with 140W of total power, it cannot be connected using Wi-Fi or SmartThings. The HW-S50B Soundbar cannot use Alexa, is not Dolby Atmos compatible and doesn't feature Samsung's Active Voice Amplifier feature.
~Samsung Solutions