YS-S100L 50W*2+100W 2.1 Subwoofer Amplifier Board 3 Channel CS8673E Bluetooth 5.1 DIY Home Audio Stereo Subwoofer Amplifier Boar

YS-S100L 50W*2+100W 2.1 Subwoofer Amplifier Board 3 Channel CS8673E Bluetooth 5.1 DIY Home Audio Stereo Subwoofer Amplifier Boar

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