SOUTHSKY 5.1CH DAC Converter Audio Decoder Digital Optical Coaxial Toslink to RCA 3.5mm Jack Support Dolby AC-3 DTS 5.1 2.0CH for Xbox PS2,PS3,PS4,TV (SPDIF/Coaxial to 6RCA+3.5mm)
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Aikexin 5.1 Game Console Audio Adapter Convert Rca Plugs To 3x 1/8 Stereo 3.5mm Aux Inputs For 5.1 Multimedia Speaker - Audio & Video Cables - AliExpress
Optical converter 5.1 Optical to RCA connection - YouTube
Amazon.com: 4K HDMI to 5.1 Digital Analog Audio Decoder + EDID Switch 24-Bit 192Khz DAC : Electronics