Can you connect wireless speakers from a network to Apple TV
Can you use wireless speakers on the network on Apple TV
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The capabilities depend on the model. Identify your Apple TV model - Apple Support
You can connect AirPlay compatible speakers wirelessly over the Wi-Fi network.
You can connect Bluetooth speakers paired, well, via bluetooth, not over the network.
List of AirPlay 2-enabled speakers - Apple
List of AirPlay 2-enabled receivers - Apple
Use Bluetooth accessories with your Apple TV - Apple Support