<p>The HDMI Arc audio return and digital-to-analog audio converter can output the TV's sound to the optical fiber coaxial 3.5mm coaxial headphone jack through the HDMI-compatible ARC interface. It also supports conversion of digital audio fiber or coaxial signals to analog stereo signals.</p><p>Features: HDMI ARC, Digital to Analog Audio Converter, Remote Volume Control, Supports RCA and 3.5mm output interfaces.</p><p>Specifications: Material - Aluminum Alloy, Power Supply Interface - Micro USB, Maximum operating current - 100mA.</p><p>Please note: Make sure the TV has an HDMI ARC interface and set the audio output to PCM or LPCM before using HDMI ARC.</p>