The Audio Return Channel (ARC) lets you connect your TV and audio system with a single High Speed HDMI cable and eliminates the need for an additional composite audio or optical cable. Remarks: 1)this HDARC is not a HDMI audio extractor, it can not extract audio from the HDMI video source. 2)pls make sure your TV has at least one HDMI port which was marked with ARC or EARC. 3)This HDMI ARC converter does not support volume adjusting with TV remote control. 4)TVS of different brands might have various ways of turning on the ARC, pls check your TV's manual carefully. 5)if there is any problem, pls contact us for trouble shooting instead of openning a dispute or negative feedback.
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