The main functions of the motherboard include: audio amplification, power amplifier module, Bluetooth output module, power conversion module, audio output module, headphone output module, switch, volume adjustment, power indicator light, etc. Description/Features: The power supply voltage of this motherboard is 5V. High integration, one motherboard realizes most practical functions. It can directly drive two 4 ohm 3W speakers (speakers need to be equipped separately), or use the audio output module to connect to an external amplifier speaker to provide better listening enjoyment.
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