For example if your TV only has a digital audio output this will convert it to analog audio RCA Left and right stereo. It will convert coaxial RCA or TosLink Fiber digital audio signals to analog L/R audio.
Musou Digital Optical Coax to Analog RCA Audio Converter Adapter
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Toslink / coaxial converter (DAC)
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Friencity Digital To Analog Audio Converter, Optical To…
Tobo Digital Optical Coax to Analog RCA Audio Converter Adapter TD
JX2 Digital to Analog Audio Converter - Optical SPDIF Toslink
Digital to Analog Stereo Audio Converter Optical or Coaxial to RCA