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S.M.S.L A100 Bluetooth 5.0 Stereo Audio Mini Class D Amplifier MA12070 Chip 2 Channel Amp Receiver for Home Desktop Speakers 80Wx2There are other WiFi 24g and Bluetooth devices in the use environment, which is prone to interference, which may lead to unsuccessful connection, or sound freeze, or even interruption of playback Bluetooth also affects e..