The Vizio M Series M51ax-J6 is a 5.1 setup that’s the next generation of the Vizio M Series M51a-H6. On its ‘Direct’ preset, it has a very neutral, balanced sound profile suitable for listening to many different types of audio content. There are some EQ presets to help you customize its sound, and it gets pretty loud. It also supports Dolby Atmos content and comes with discrete surround speakers to help clearly represent surround objects in the sound image. That said, it lacks more premium sound enhancement features, like a graphic EQ or room correction.