Nattage
Member
Not sure what you are asking Pavel here.
If you're feeding the AP with its audio return channel, it will receive only stereo. Full stop. Whether the TV and anything connected to it is EARC or not. Because ARC can get stereo PCM and I think basic DD 5.1, but the AP does no decoding at all and no TVs with decode to more than 2 channels.
The only device to feed directly into the HDMI in of the AP, with 7.1 from files (using infuse) or 5.1 PCM from streaming apps, is the Apple TV 4k.
If you're feeding the AP with its audio return channel, it will receive only stereo. Full stop. Whether the TV and anything connected to it is EARC or not. Because ARC can get stereo PCM and I think basic DD 5.1, but the AP does no decoding at all and no TVs with decode to more than 2 channels.
The only device to feed directly into the HDMI in of the AP, with 7.1 from files (using infuse) or 5.1 PCM from streaming apps, is the Apple TV 4k.