XCSOURCE 3pcs 5Wx2 PAM8406 Digital Amplifier Board Dual-Channel Stereo Audio Module TE418 Excellent noise suppression, you will hear any noise without connecting input audio Dual-channel stereo, only needed 5V power supply can input 5W+5W power The unique non-LC filter Class-D digital power board, can be used computer USB to charge Dual-panel wiring, can properly solve the ground potential balance and crosstalk between channels caused by wiring Super mini design, can be easily placed in a variety of digital product's inside small space