The TF card MP3 decoder board features the GPD2856A MP3 decoder IC along with an onboard 2-watt L/R mixed mono audio amplifier IC (8002). This updated version of the earlier GPD2846A TF card MP3 decoder board includes a TF card slot for a micro-SD memory card and an LED power indicator.
Measuring at 35mm × 22mm, this compact board requires only a power supply, direct speaker connection, and switches to operate. The manufacturer recommends a working voltage of 3.7 to 5V.
Audio Amplifier Module, Modules and Displays
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