I have worried me the device to the digital audio information to filter out from an HDMI signal, to process them in a exteren digital processor further. Source here is a Raspberry Pi and the processor a devil Decoderstation 5. After connecting the splitter that worked right away, both the optical as well as coaxial output to. It did not matter if Dolby Digital or DTS. I am extremely satisfied with the device and would recommend it anytime recommendation hehlen!