LM386 Audio Amplifier Module1. Onboard LM386 Chip2. 200 multiplier benefits circuit design3. On-board speaker wiring Block4. On-board 10K variable resistor, you can adjust the volume of the enlarged5. Onboard power indicator6. the chip pin leads, can be directly input audio signal7. Operating voltage: 5 ~ 12V8. Board size: 41 (mm) x13 (mm)