ARC Function (Audio Return Channel): Extractor the Audio from TV to Soundbar or Amplifier. Please connect your TV HDMI(ARC) Port to Tendak Audio Adapter HDMI Output Port with HDMI Cable, then optical cable/ L/R or 3.5mm headphone to the soundbar, Speaker, home theater, A/V receivers etc. . Note: If it does not work with TV, please adjust the resolution of the TV to 1080P and below | 192KHz Sampling Rate Achieved - It Actually Supports Sampling Rate at 32, 44.1, 48, 96 and 192 KHz, and 24-bit S/PDIF Incoming Bit Stream on Left and Right Channels. Pleasae use HDMI 1.4 cable (19+1), Please note: Need to manually adjust the volume of the speaker. TV remote cannot change audio volume, and TV remote cannot change audio volume | Audio Outpur Simultaneously - This HDMI ARC Adapter can send audio from TV (Support ARC function) to Optical/ Coxial/ 3.5mm/ L/R audio through ARC Adapter via HDMI/ARC interface and out audio simultaneously. (NOTE: It is Incompatible Dolby AC3/ Dolby Digital Plus etc., Please Set the Audio Output to PCM or LPCM before Using) | Compatibility - Compatible with All HDTV with ARC Fucntion and all Soundbar, Speaker with Optical/ Coaxial/ L/R/ 3.5mm audio out port device. If the ARC does not work, try unplugging the cable or change HDMI cable, wait a few minutes to reconnect, and plug the converter into a power source | What You Will Get - 1xARC Adapter, 1xUSB power supply line, 1xUsers Manual, One Year Limited Manufacturer's Warranty by Tendak. NOTE: When using the ARC function, the volume needs to be adjusted by your audio device. Make sure it is the HDMI ARC port of the connected TV and switch to the "on" state