HDMI Splitter Audio Extractor, 4k@60Hz 1 in 2 out with HDMI Optical Toslink SPDIF + HDMI 7.1CH + 3.5mm Audio Out for PS4 Xbox One DVD Blu-ray Player HD TV Projector - Newegg.com
Amazon.com: Tendak 4K x 2K HDMI to HDMI and Optical TOSLINK SPDIF + 3.5mm Stereo Audio Extractor Converter HDMI Audio Splitter Adapter(HDMI Input, HDMI + Digital/Analog Audio Output),AV-096-BK : Electronics
60M True 4K HDMI Active Optical Cable (True 4K@60m) - VE7834, ATEN Video Extenders | ATEN Corporate Headquarters
Product - avedio links
Monoprice Blackbird 4K Series 7.1 HDMI Audio Extractor - Monoprice.com