[ ARC Audio Extractor]Audio Return Channel function and audio extract to digital and analog signal.That means, when connected to ARC device,such as your TV with ARC port,audio will be return from TV and output to SPDIF,Coaxial,L+R ,3.5mm;Note: Please set your TV audio output to PCM, LPCM [192KHz DAC Digital to Analog Converter]Input SPDIF or Coaxial Digital signal,Output to L+R Analog Audio,3.5mm Jack stereo sound;Note: Please set your TV audio output to PCM, LPCM [ ARC CEC Volume Adjustable]When switch to ARC mode, volume can be countrolled by TV's remote controller (Attention: CEC is only for 1.4 version or ab ove,both of your device and cable must be required,Don't forget to set the CEC control configurations of your TV,or else for volume control) [SPDIF to Coaxial Bidirection Converter]SPDIF (Toslink/Optical) convert to Coaxial, Coaxial convert to SPDIF(Toslink/Optical); [Mini Size and Easy to Use]Aluminum shell,Small size,portable,compatible with for Blu-ray DVD,HDTV,TV,TV Box,Game PS2,,, Style: ARC Audio Extractor Audio format: PCM Audio Sampling rate: 192Khz Mode choice: ARC, coaxial, optical Size:4 x 2.4 x 0.8 inches Setting : Please Set the Audio Output to PCM or LPCM before Using; Connection and Operation: 1. Connect the port of the adapter to the (ARC) port of the TV through the cable 2. Connect the converter's optical fiber and coaxial input port with the corresponding audio interface of DVD or through optical fiber cable or coaxial cable 3. Connect to the amplifier system through optical fiber cable, coaxial cable or cable and 3.5mm audio cable 4. Connect the USB power cord to the Micro-USB interface of the converter 5. Switch to the corresponding audio by flipping the switch Material:Aluminum alloy colour:black PackageContents: 1 * Audio Extractor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.