Sonos Optical Audio Adapter for Sonos Beam and Arc, 5 pcs, black - Adapter, OPADBWW1BLK | Euronics
HDMI ARC to Optical Adaptor - novis electronics AG
avedio links stca SaiRetail HDMI to HDMI with Optical Toslink SPDIF with 3.5 mm AUX Stereo Audio Out, HDMI Extractor Splitter Adapter Support 4K at 30Hz 1080P Full HD 3D : Amazon.in:
4K HDMI Audio Break Out Extractor Adapter TOS Optical & 3.5mm Jack
HDMI to HDMI/Optical Fiber Audio/2RCA Audio Converter
HDMI vs. Optical: Which Digital Audio Connection to Use? - CNET