HDMI Audio Extractor 4K HDMI to Optical 3.5mm AUX Audio Adapter Splitter Converter Supports HDCP Dolby Digital DTS 5.1 PCM : Amazon.ca: Electronics
Our TV Input Tests: Audio Passthrough - RTINGS.com
app shows stereo pcm / 2.0, but using eARC and surrounds | Sonos Community
Getting 5.1 and lossless audio with a SoundTouch 300 | Bose Wikia | Fandom
Amazon.co.jp: 5.1 Audio Decoder, Dolby Atmos, U Disk HDMI Bluetooth 5.0 Fiber Optic ARC Coaxial, Supports Blu-ray PlayerPS Mputerset-top Box and Other Source Devices,Excellent2 : Sports & Outdoors