1111MicrosoftInternetExplorer402DocumentNotSpecified7 8 磅Normal0Specifications Product Name bluetooth Digital Power Amplifier Boardbluetooth Version 5 0Wireless Distance 20 meters in an open spaceSignal Input bluetooth onlyPower Amplifier Chip PAM8403Power Input TYPE C DC 5V Matching Speaker 4ΩShort Circuit Protection NoneAppearance Size 40 x 30 mmMounting Hole Distance 34 x 24 mm Features 1 TYPE C Power Supply Port Equipped with a modern TYPE C power supply port this amplifier board supports dual 5W bluetooth amplification ensuring reliable and efficient power delivery from various sources including power banks and fast chargers 2 Versatile Power Compatibility Designed for ease of use the amplifier board operates on a straightforward DC 5V power supply It fully supports power banks as well as normal and fast charging options providing flexibility and convenience for various power supply scenarios 3 Wide Speaker Compatibility The amplifier board supports 4 8Ω impedance and is compatible with 4 inch and larger speakers This flexibility allows for easy matching with various speakers and larger speakers enhance sound quality making it ideal for different audio setups 4 High Performance Audio Amplification Utilizing the PAM8403 stereo class D audio power amplifier chip the board delivers high power amplification with low harmonic distortion and high efficiency This enables the reproduction of high quality sound with minimal interference 5 High