Audio amplifier module 100 times LM358 XD-21A
- LM358 chip onboard.
- 100 gain of the circuit design.
- The working voltage: 5 - 12V.
- 10K onboard adjustable resistance, you can adjust the magnification.
- Onboard power indicator.
- The chip has led major pin can be directly input and output signals.
Size: 32.7mm * 13.3mm.
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