ARC Function (Audio Return Channel): Extract TV audio to soundbar or amplifier. Connect TV (ARC) port to audio adapter output port with a cable, then connect Optical, L/R, or 3.5mm headphone cable to soundbar, speaker, home theater, A/V receiver, etc. Audio Sampling Rate: Supports sampling rates up to 192 kHz, including 32, 44.1, 48, 96 and 192 kHz. Supports 24-bit S/PDIF input bitstream on left and right channels. Please use HDMI 1.4 cable (19+1 pins). Note: Manual adjustment of speaker volume is required. TV remote control cannot change volume. Simultaneous Audio Output: This audio adapter sends audio from a TV supporting ARC function to Optical, Coaxial, 3.5mm, or L/R audio via the ARC interface simultaneously. Note: Not compatible with Dolby AC3 / Dolby Digital Plus. Set the audio output to PCM or LPCM before use. Compatibility: Compatible with HDTVs featuring ARC function. Features SPDIF, coaxial, optical, RCA, and 3.5mm headphone jacks with 4 output ports. Used with speakers, amplifiers, soundbars, wired headphones, and other receiving devices. Colour: Black Material: Aluminum Note: Due to different batches, the actual product may have slight differences or color variations. Package Contents: 1 * Converter 1 * Data cable 1 * English instruction manual Other items are not included. Note: Due to lighting and display settings, the actual color may differ slightly from the image. There may be a measurement error of +/- 1-3 cm.