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Amazon.com: Digital 2.1 Channel Amplifier Board Bluetooth USB Input 50w x2 Subwoofer BTL 100w Home Stereo Amplifiers for Speakers DC 12V-26V : Electronics
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Amazon.com: Nobsound G2 Subwoofer Power Amplifier Mini Mono SUB Amp 100W PBTL BTL Bridge Home Theater : Electronics
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Lm1875 2.1 Channel Digital Audio Amplifier Stereo High Power Amplifier Board Subwoofer Btl Amplifier Board 50w*2+100w - Home Theater Amplifiers - AliExpress
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Lm1875 2.1 Channel Digital Audio Amplifier Stereo High Power Amplifier Board Subwoofer Btl Amplifier Board 50w*2+100w - Home Theater Amplifiers - AliExpress
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