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what is better pcm2.0 or DTS 5.1

  • December 18, 2022
  • 3 replies
  • 2110 views

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Good evening
I have a beam sound bar connected to the HDMI arc port on the TV 
The sonos application says DTS 5.1 but if I choose Pcm 2.0 on the TV I get this format
Which is better?

Best answer by 106rallye

If you want the surrounds to play surround, yes. The 2.0 in PCM 2.0 are just front left and front right. The 5.1 is FR-center-FL and surrounds (plus a Sub).

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3 replies

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  • Senior Virtuoso
  • December 18, 2022

Depends what you call “better”. PCM 2.0 is an uncompressed stereo 2-channel audio signal. DTS 5.1 has 3 front channels of audio plus 2 rear surround channels and a sub channel. 


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  • Author
  • Contributor II
  • December 18, 2022

When you use a beam and two sonos one as surround speakers you need to be in 5.1 for better sound quality?


106rallye
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  • Answer
  • December 18, 2022

If you want the surrounds to play surround, yes. The 2.0 in PCM 2.0 are just front left and front right. The 5.1 is FR-center-FL and surrounds (plus a Sub).