Features The audio power amplifier is designed with terminal blocks for convenient wiring of speaker. This audio power amplifier is widely used in store solicitation, home theater, square speakers, etc. This audio power amplifier uses LM386 chip and It has 200 times gain circuit design, and power indicator light. The 10K adjustable resistor can be used to adjust volume，the main pin of chip can be input audio signal directly. We strive to provide you with the highest quality product and the best customer experience, if you're not entirely satisfied, please just feel free to contact us at any time. Buy it Confidence: Let you feel safe using, so you have a better using experience. Great value for money. If you have any problems, please fell free to contact us anytime. Our team will help you solve the problem as soon as possible. Features:  The audio power amplifier is designed with terminal blocks for convenient wiring of speaker. This audio power amplifier is widely used in store solicitation, home theater, square speakers, etc This audio power amplifier uses LM386 chip and It has 200 times gain circuit design, and power indicator light. The 10K adjustable resistor can be used to adjust volume，the main pin of chip can be input audio signal directly. We strive to provide you with the highest quality product and the best customer experience, if you're not entirely satisfied, please just feel free to contact us at any time. Buy it Confidence: Let you feel safe using, so you have a better using experience. Great value for money. If you have any problems, please fell free to contact us anytime. Our team will help you solve the problem as soon as possible. Specification:Working Voltage: 5~12VSize: 4*1.3cm / 1.6*0.5inQuantity: 5pcsWeight: 25g / 0.9oz (approx.) Package list: 5 * Amplifier Modules Package List