ARC Function (Audio Return Channel): Extracts TV audio to a soundbar or amplifier. Connect the TV's HDMI (ARC) port to the audio adapter's HDMI output port using an HDMI cable, then connect an optical cable, L/R, or 3.5mm headphone cable to a soundbar, speaker, home theater, A/V receiver, or other audio device. Supports sampling rates of 32, 44.1, 48, 96, and 192 kHz with 24-bit S/PDIF input bitstream on left and right channels. Use an HDMI 1.4 cable (19+1). Manual adjustment of speaker volume is required; TV remote control cannot adjust volume. Simultaneous Audio Output: This HDMI ARC adapter sends audio from a TV with ARC support to optical, coaxial, 3.5mm, or L/R audio outputs via the HDMI/ARC interface while maintaining audio output. Not compatible with Dolby AC3 or Dolby Digital Plus. Set audio output to PCM or LPCM before use. Widely compatible with all HDTVs featuring ARC. Features SPDIF/coaxial, optical, RCA, and 3.5mm headphone jacks with four output ports, helping resolve interface compatibility issues between TVs and audio systems. Works with speakers, amplifiers, soundbars, wired headphones, and other audio devices for a versatile listening experience. Color: Black Material: Aluminum Tips: Product design may vary slightly between batches due to ongoing updates. These minor differences do not affect functionality. Package Contents: 1 x converter 1 x data cable 1 x English instruction manual Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.