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Hello,

I have a Sonos system with : Beam GEN1 + Sub mini + two One SL And a Apple TV 4K (2022) for streaming videos connected to a TV HDMI port.

I recently bought a new TV (Philips 55OLED849) with only one eARC HDMI port.

Now i can have Dolby Atmos using eARC HDMI connection to a new Beam GEN2 (compatible with Dolby Atmos).

But is it necessary to connect my Apple TV to a HDMI eAR to benefit Dolby Atmos ? because i only have one eARC port on my new TV. The others HDMI port are 2.1 but not ARC/eARC.

Thanks for helping me

You do not need to connect a source to an ARC/eARC port.  ARC is Audio Return Channel, the only devices which require an ARC port are audio devices. 

BTW, most (all) TV’s have only one ARC/eARC port.

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