Fosi Audio TB21 Bluetooth Sound Power Amplifier Board 2.1 Channel Mini Wireless Digital Amp Module 50W X2 100W Subwoofer 211011 From Jiao10, $24.59
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❃❃The TPA3116D2 devices feature short-circuit and thermal protection as well as overvoltage, undervoltage, and DC protection to prevent total failure.
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