XS9871 Amplifier 5W Module is a small audio amplifier circuit, output power 5W, power supply 2.5-5.5V.
Specification of XS9871 5W Digital Audio Power Amplifier Module :
Working voltage: DC2.5 – 5.5V
Working current: 1A or more
Output power: 3 – 5W
Load impedance range: 2Ω – 8Ω
Recommended to match 3W 4R speakers
The power supply can not be reversed, the IC will burned out
Do not use AC power supply or power supply higher than 5.5V. It is recommended to use DC 5V.