MuxLab 500439 HDMI Audio Extractor with Dolby & DTS Downmixer

The 500439 takes an HDMI 2.0 source at up to 4K/60 4:4:4, loops the video through to a display untouched, and pulls the audio out. It downmixes Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD Master Audio, or LPCM up to 7.1 channels to a two-channel analog output on L/R RCA jacks.

That is the part most extractors skip: many will only pass a bitstream through, which is useless if the amplifier cannot decode it. The unit is HDCP 1.4 and 2.2 compliant, so protected sources are handled properly rather than blanked.