INTROHDMI 2.1 Audio Extractor 4K 120Hz 8K is ideal for HIFI audio amplifier or speaker system, satisfy various high requirement of UHD video format by EDID Switch Selector, CEC control. It can separate digital TOSLINK/ SPDIF,analogue STEREO audio based on HDMI signal, use in GAME PS5,office,conference room, home entertainment, home theatre, education audio & video system,museum etc. Pls use good HDMI 2.1 48Gbps cable less than 3mPackage Contents 1x HDMI Audio Extractor1x 5V 2A Power Adapter1x User ManualTechnical Information Input/ Output Interface1x HDMI IN, 1x HDMI OUT, 1x SPDIF Optical Digital (5.1CH),1x 3.5mm Stereo Audio (2.1CH) HDMI Input/ Output Resolution4K@120Hz 60Hz 4:4:4 48Gbps 8bit HDR D-o-l-b-y Vision, VRR HDCP 2.3 /2.2; 24bit 36bit deep color, DVI ,1080p/ 3840x2160/ 3440x1440@ 240Hz/ 144Hz/120Hz/60Hz 3D HDMI 2.1 Cable less than 3m HDMI 2.1 cable at 8K with CEC control. Hi-fi Audio SPDIF Optical Digital (5.1CH)+ 3.5mm L/R Stereo Audio (2.1CH),D-o-l-b-y Digitial DTS 2.1/5.1/ 7.1CH Audio,LPCM/PCM 2.1/ 5.1CH. SPDIF, L/R Stereo Audio can work separately to speaker without monitor.SPDIF fiber optic COPY HDMI OUT audio; To get SPDIF 5.1ch sound,pls connect 5.1ch audio system firstly. Set Audio EDID via panel switch. Pls read EDID picture carefully. Power Consumption DC 5V/2A Warm Tips PLS use less than 3mtr qualified HDMI 2.1 cable. HDMI output ATMOS neither work together with SPDIF 5.1ch nor 3.5mm 2.1CH. It`s not audio down-mixer. NO ARC e-ARC, Not for S-o-nos ARC Any issue, pls click sold by EZCOOTECH to get Seller Technical Support by AMZN Message.