FeinTech eARC VAX01202 1x2 HDMI audio extractor for modern TVs providing Dolby Atmos TrueHD DTS-HD to an AV receiver, 5V DC || 500mA || 1.75W : Amazon.co.uk: Electronics & Photo
Connecting your Dolby Atmos-enabled soundbar to your TV - Dolby
Set up Dolby Atmos or surround sound on Apple TV with a sound bar or AV receiver - Apple Support
サウンドバーでDolby Atmos(ドルビーアトモス)の音声フォーマットを楽しむ方法 | Sony JP
Dolby Atmos, HDMI Switcher and HDFury Arcana : r/sonos