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5.1 surround sound

Calrec
CBC, SportsNet Tap Calrec to Produce NHL in 5.1 In Canada, CBC and Sportsnet made the decision to produce all NHL regular season games and playoffs in discrete 5.1 audio
YouTube TV
YouTube TV Launches a $20 4K Plus Tier Also adds 5.1 surround sound and features for watching live sports

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