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Features: 1.Onboard LM386 chip 200 times gain circuit design on?board speaker ... Features: 1.Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2.The main pins of the chip have been led out you can directly input audio signals. 3.On?board 10K variable resistor you can adjust the amplification volume.... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder.... Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. The main pins of the chip have been led out you can directly input audio signals. On?board 10K variable resistor you can adjust the amplification volume. Good?quality PCB... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder.... Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more

1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire hol... 1�Onboard LM386 chip 200 times gain circuit design on?board speaker wire holder. 2�The main pins of the chip have been led out you can directly input audio signals. 3�On?board 10K variable resistor you can adjust the amplification volume.... more