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Probably not. I have my optical output connected to my receiver and it does not mute the TV speakers.
Sorry, there was a problem. Please try again later.Using the Optical Out port does not mute the TV speakers. However, the TV was not designed to use both outputs at the same time and there may be a variable amount of echo. Some customers choose to mute the TV speakers when using the Optical Out port to avoid this. Hope this helps! Thank you, TCL Customer Support
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