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XH M139 2.1 channel Digital Power Amplifier Board 12V 24V Wide Voltage TPA3116D2 2*50W+100W Audio Amplifier Board| | - AliExpress
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Amazon.com: Bluetooth Amplifier Board 2.1 2X50W+100W 12V-24V Audio Power Amplifier Module Bass and Treble Control for Store Home Theater Speakers with Antenna : Electronics
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