HDMI ARC Adapter to RCA Audio Converter Digital to Analog Stereo DAC Coaxial Optical ARC Input to Coaxial +Optical +L/R+3.5mm Jack Output for TV: Amazon.com: Industrial & Scientific
HDMI Audio Return Channel ARC&DAC Audio Converter with 3.5mm Digital Audio192Khz Optical/Coaxial/HDMI ARC Input for PC Laptop TV - AliExpress