Agptek HDMI Audio (SPDIF+3.5mm) Extractor Support Ultra HD Toslink Optical Audio Output - - 29606371
USB-C to HDMI AOC, 4K, HDR, 49 ft | Eaton
Amazon.com: 1080P HDMI Audio Extractor,AMANKA HDMI to HDMI Audio Optical and RCA(L/R) Stereo Analog Outputs Video Audio Splitter Converter for Ruku,Chromecast, Blu-ray Player, Cable Box, Fire TV, etc : Electronics
HDMI vs. Optical: Which Connection You Should Use
Product - avedio links
AV Toolbox AP-536 HDMI Audio Extractor AP-536 B&H Photo Video
30M True 4K HDMI Active Optical Cable (True 4K@30m) - VE7833, ATEN Video Extenders | ATEN Corporate Headquarters
NeweggBusiness - Nippon Labs Premium High Performance HDMI Cable 6 ft. HDMI TO HDMI Cable and 6 ft. Pro A/V Premium Toslink Digital Optical SPDIF Audio Cable (Combo Pack) 6 feet