【Optical to 3.5mm RCA Converter】---: DAC Converter Converts Digital Optical Coaxial Audio Signals Input to Analog RCA L/R and 3.5mm Audio Signals Output. This DAC is Only Compatible with the PCM (2.0 CH) Audio Format, Not Support Dolby Ac3 / Dts / 5.1 CH Audio Signals.
eBay