1. onboard TDA2030A audio power amplifier chip 2. mono 18W amplifier circuit design 3.on-board speaker wiring blocks 4.onboard 10K adjustable resistance, you can adjust the volume of amplification 5. Onboard power indicator 6. the chip has been the main pin leads, you can directly enter the audio signal 7. the working voltage: 6 ~ 12V 8.The peak output current is 3A
