eSynic 4K HDMI Audio Extractor HDMI to HDMI + Optical TOSLINK SPDIF + Analog RCA L/
ASTRO HDMI to Optical Adapter - USA | ASTRO Gaming
Amazon.com: Tensun 4K HDMI to HDMI Optical SPDIF TOSLINK Converter Adapter with 3.5mm RCA R/L Stereo HDMI Audio Extractor Splitter for Blue-ray PC Laptop Xbox One HDTV : Electronics