HDMI – SPDIF toslink / coax | Adapters and converters
HDMI ARC Adapter to RCA Audio Converter Digital to Analog Stereo DAC Coaxial Optical ARC Input to Coaxial +Optical +L/R+3.5mm Jack Output for TV: Amazon.com: Industrial & Scientific
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4K HDMI with Audio Extractor Converter
Product - avedio links
Amazon.com: HDMI ARC Adapter, Tendak ARC Audio Extractor with Digital Optical TOSLINK SPDIF/Coaxial and Analog 3.5mm L/R Stereo Audio Converter for HDTV Soundbar Speaker Amplifier : Electronics
HDMI ARC Audio Extractor 192KHz DAC Converter ARC Audio Extractor Support Digital HDMI Audio to Analog Stereo Audio RCA L/R Coaxial SPDIF and 3.5mm Jack ARC Audio Adapter for TV: Amazon.com: Industrial