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PAM8403 Bluetooth Amplifier 10W Stereo Board Dual Channel For 18650 Battery | eBay
2 x 5W + 10W Bluetooth 5.0 Amplifier Board 5 VDC with Battery Option
2 x 50W Bluetooth Stereo Audio Amplifier Board - TSA3118B(TWS/Apt-X)
DC 5V Wireless Bluetooth Receiver 6W*2 Audio Power Amplifier Board Module 18650 | eBay
