4K@60HZ HDMI AUDIO EXTRACTION- This HDMI to optical Toslink SPDIF converter is 1 HDMI input to 1 HDMI ouput + Optical Toslink SPDIF digital audio output(PASS CH/5.1CH Mode) and 3.5 headphone jack audio out port,effectively achieves audio synchronization separation to obtain high-quality audio signals. HIGH RESOLUTION 4K@60Hz- HDMI audio extractor optical supports resolution up to 4K@60Hz, 4K@30hz, 1080P@30hz, 1080P @60hz and lower, HDR, HDCP 1.4 and HDCP 2.2, YUV 4:4:4, 3D deep color and 18 Gbps bandwidth, support HDMI 2.0, downward compatible for HDMI 1.4, ensure full compatibility with all of the newest audio-video & streaming devices. Installs in minutes and Plug & Play, More Clear, More Delicate,Give You a Nice Feeling of Home Theater. SPLITTER WITH VOLUME KNOB- The HDMI audio extractor 3.5mm has 1 HDMI export and 1 HDMI output port: Connect HDMI export to a monitor, the monitor will output video. So the product is an HDMI extractor and HDMI splitter with control output analog vol