1.The HDMI ARC audio adapter converter converts the ARC and optical audio signal to Optical/SPDIF HDMI ARC L/R 3.5mm Jack Stereo. The HDMI ARC audio extractor has two input signal methods, namely Optical/SPDIF and ARC(HDMI), four output methods, namely HDMI ARC, Optical/SPDIF,Stereo L/R and 3.5mm Jack. There is a switch to select input signal. 2.The HDMI ARC converter's four output ports, ARC/HDMI, Optical/SPDIF, L/R stereo and 3.5mm jack, can work at the same time. Also it can convert digital audio signal to analog stereo signal. 3.When using ARC/HDMI input, connect the TV's HDMI/ARC port and the adapter's ARC port via HMID cable. Make sure to use AGW26 standard HDMI 1.4 cable. The HDMI 1.3 cable does not support ARC function. 4.Supports 192KHz sampling rate: supports sampling rate at 32, 44.1, 48, 96 and 192 KHz, and 24-bit SPDIF incoming bit stream on Left and Right Channels.