To get life-like surround sound that is true to the cinema experience, multiple speakers are needed. In soundbars, there are 2 ways to achieve surround sound.

virtual-simulated-surround-soundbar true-discrete-surround-soundbar-7.1
TYPES VIRTUAL SIMULATED SURROUND TRUE DISCRETE SURROUND
Characteristics Relies on sound to reflect off your walls to trick your ears into thinking there are speakers all around you Discrete surround speakers placed around listening position similar to a traditional home theater system
Audio Performance
  1. More powerful and dynamic sound than your TV speakers
  2. Widens the soundstage of your TV
  1. More prominent surround effects with accurate sound directivity
  2. Delivers home theater experience
Pros
  1. Clean and neat setup with single soundbar
  2. Less cabling
  3. Soundstage wider than its size
  1. Sound from all directions; true surround sound
  2. Consistent surround sound quality regardless of room shape/size
  3. Easier to set up than traditional surround sound system
  4. Wider listening sweet spot
Cons
  1. Highly dependent on room shape and size
  2. Narrow sweet spot
  3. Lack of rear surround effects; sound only coming from front
  1. More space required for setup
  2. More cabling
  3. Price tends to be more expensive

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