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Acoustic Audio by Goldwood Bluetooth 2.1 Speaker System 2.1-Channel Home Theater Speaker System, Black (AA2170)
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Amazon.com: Nobsound HiFi 2.1 Channel Bluetooth 5.0 Power Amplifier Board Case Stereo Subwoofer Amp : Electronics
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Amazon.com: Dayton Audio DTA 2.1BT2 with MK402X & MKSX4 Subwoofer 2.1 Audio System Bundle : Electronics
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Amazon.com: Bluetooth Power Amplifier Board Stereo - HiFi 2.1 Channel 2X220W+350W Bluetooth 5.1 Audio Amplifier Board 12-38V Digital Power Amplifier Module Subwoofer Control with AUX/Bluetooth/USB Flash Drive : Electronics
