1111MicrosoftInternetExplorer402DocumentNotSpecified7 8 磅Normal0Specifications Product Name bluetooth Digital Audio Power Amplifier BoardProduct Model XY ST21PROChannels 2 1 ChannelOutput Power 100W x 2 200W SubwooferAmplifier Chips Dual Core TPA3221bluetooth Interface IPEX interface for external antennaColor Options BlackTypes Optional Bare board With shell Potentiometer external connection Features 1 High Efficiency and Stability The XY ST21PRO utilizes dual core TPA3221 amplifier chips which are known for their high efficiency and stability These chips ensure minimal power consumption while delivering high definition sound quality making them perfect for high performance audio applications 2 Enhanced Safety with Power Switch This amplifier board comes with a built in power switch providing an added layer of safety for the user The switch allows you to easily control the power supply reducing the risk of electrical hazards 3 Lossless Components for Superior Sound Quality The use of high quality lossless components in the design of this amplifier ensures that sound quality is maintained This makes it ideal for audiophiles who demand top notch audio performance 4 Independent High and Low Frequency Tuning The amplifier board offers independent tuning for high and low frequencies giving you the flexibility to adjust the sound to your preference This feature makes it convenient to achieve the perfect audio balance for different types of music or s