About this item ARC Function (Audio Return Channel): Extracts audio from the TV to a soundbar or amplifier. Connect your TV's HDMI (ARC) port to the audio adapter's HDMI output port with an HDMI cable, then use an optical cable, L/R, or 3.5mm headphone connection to your soundbar, speaker, home theater, or A/V receivers. 192KHz Sampling Rate Achieved: Supports sampling rates of 32, 44.1, 48, 96, and 192 KHz, with a 24-bit S/PDIF incoming bit stream on left and right channels. Please use an HDMI 1.4 cable (19+1); manual volume adjustment is required as the TV remote cannot change audio volume. Audio Output Simultaneously: This HDMI ARC adapter can send audio from the TV (supports ARC function) to optical, coaxial, 3.5mm, or L/R audio through the ARC adapter via HDMI/ARC interface while outputting audio simultaneously. (NOTE: Incompatible with Dolby AC3/Dolby Digital Plus, set audio output to PCM or LPCM before use.) Wide Compatibility: Plug and play, compatible with all standard HDMI so