This is the circuit diagram of 2x22W stereo audio amplifier built based single power IC TDA1554. The single IC capable to give you two input channel as well as two output channel. You just need several discrete components to support the TDA1554 to work. You need at least 12V / 5 Amperes power supply for best audio performance. Heatsink is required.
Download TDA1554 datasheet for circuit project reference.
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