5V digital power amplifier board With switch

Operating Voltage 2.5V-5.5V, the maximum output 3Wx2, efficiency can reach above 90%, you can use the computer USB port 5V power supply

Feature:
Operating voltage: 2.5V-5.5V

Maximum output: 3Wx2 (5V 4 ohms)

Board size about: Width 30mm / depth 22mm / high 16mm (Dimensions without potentiometer handle protruding parts)

Working voltage should not exceed 5.5V, the power of positive and negative can not be wrong. Otherwise, there is the possibility of damage chip