Specification: Origin: Mainland China Type: Voltage Regulator Condition: New Application: Speaker Model Number: Digital Amplifier Board PAM8403 mini 5V digital small power amplifier board with switch potentiometer can be powered by USB and has good sound effect Product parameters: Working voltage: DC 5V Output power: 3W*2 (4) Product name: PAM8403 digital power amplifier board Specification model: GF1002 Power supply range: 2.5-5.5V Product size: 30*20*15mm (excluding the protruding potentiometer rod) Product Description: PAM8403 is a small digital power amplifier chip, the high-definition sound quality highlights the advantages of digital chips, the circuit adopts reasonable peripheral configuration, and the power filter is upgraded to 470uf (some sellers are less than 100uf or even have no capacitor) 1.6mm glass fiber plate, which really puts the power amplifier The board is meticulous, and it outputs 3W+3W high-fidelity sound quality. It is a rare good product for power amplifier enthusiasts. The potentiometer adopts the original anti-meter body, and the service life can reach 15 years. The potentiometer has a switch that can be turned counterclockwise to directly cut off the power. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1Pc*Digital Amplifier Board