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Hi David! The 55TU7000 features two ways to connect an audio system to the TV. HDMI ARC or Digital Optical Audio. If your device does not feature digital connections and supports analog audio or RCA inputs, you can utilize an adapter from Best Buy at the following link to convert the Digital Optical output from the TV to RCA for your audio equipment. https://www.bestbuy.com/site/insignia-optical-coaxial-digital-to-analog-converter-black/4226000.p?skuId=4226000 ^Tim
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