Tendak HDMI Audio Extractor Splitter HDMI to HDMI Optical SPDIF Toslink + 3.5mm Stereo Audio Digital to Analog Converter Adapter for HDTV DVD Blue-Ray Player PS4 Pro Support 4K ARC : Amazon.co.uk:
UNSTINCER HDMI (e) ARC Audio Extractor 2.0/5.1 +192KHz DAC Converter, Digital Spdif Optical Toslink Coaxial to Analog RCA 3.5mm Jack Coaxial Spdif, Return Channel Audio Adapter for TV Phono Amplifier : Amazon.co.uk:
HDMI ARC Audio Adapter Digital Audio Converter 192KHz Multifunctional Digital to Analog Audio Converter Coaxial or Optical or HDMI ARC Audio Input to Coaxial+Optical+L/R+3.5mm Jack Output : Amazon.co.uk: Electronics & Photo
HDMI ARC and HDMI eARC: everything you need to know | What Hi-Fi?