1. ARC Function (Audio Return Channel): Extract TV audio to soundbar or amplifier. Please connect TV HDMI (ARC) port to Tendak audio adapter HDMI output port with HDMI cable, then Optical cable/L/R or 3.5mm headphone to soundbar, speaker, home theater, A/V receiver, etc. 2. Reach 192KHz sampling rate - It supports sampling rates of 32, 44.1, 48, 96 and 192 KHz, and 24-bit S/PDIF input bitstream on left and right channels. Please use HDMI 1.4 cable (19+1). Please note: Manual adjustment of speaker volume is required. TV remote control cannot change volume. 3. Simultaneous Audio Output - This HDMI ARC adapter can send audio from TV (support ARC function) to Optical/Coaxial/3.5mm/L/R audio via HDMI/ARC interface, and output audio at the same time. (Note: Not compatible with Dolby AC3 / Dolby Digital Plus, etc., please set the audio output to PCM or LPCM before use). 4. Widely used: Supports HDTVs with ARC function. SPDIF / coaxial, optical, RCA and 3.5mm headphone jacks, 4 output ports, which can solve the interface compatibility problem between TV and audio system. It can be used for speakers, amplifiers, sound bars, wired headphones and other receiving devices, providing a diverse listening experience. 5. Colour: Black 6. Material: aluminum 7. Tips: The product may be updated constantly. Due to different batches, the actual product may have slight differences or color differences, which does not affect use. 8. Package Contents: 1 * converter, 1 * data cable, 1 * English instruction manual. Only the above package content, other products are not included. 9. Note: Light reflection 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.