CT14 4.2 Bluetooth 5V 2A Mini Stereo Power Amplifier Board Module 5W+5W (Multicolor)

Support USB sound card, free drive, plug and play (normal lithium battery power supply).This product has its own dual 5W power amplifier circuit, and must not be connected to another amplifier.The outputs of the two amplifiers cannot be connected in parallelor the negative poles are connected together, otherwise the power amplifier chip is damaged.Two 2-8Ω, 3-10W loudspeakers can be connected separately, and the output is stereo.The maximum working current is 5V2A.It is powered by a regulated power supply of 5V2A or above, and the sound quality is better.It is recommended to use 3.7V lithium battery (Lithium battery needs to have a protection board).It has a USB charging port for charging the lithium battery.The USB port can also be used as a power supply port or a 5V adapter.It is not allowed to use a power supply with unstable voltage or current such as dry battery, power bank or multi-function transformer.When the Bluetooth board is installed, the Bluetooth antenna should not be close to the metal parts as much as possible toavoid affecting the transmission distance.