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Amazon.com: TDA7294 2.1 Channel 2x80W+160W Subwoofer HiFi Power Amplifier Board Module, Audio Amplifier Board, Dual 18-28V AC : Electronics
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YJ TDA7294 amplifier board 2.1 channel UPC1237 2*80W+160W subwoofer with Speaker protection Sealed potentiometer|amplifier board|2.1 channelamplifier board 2.1 - AliExpress
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