PAM8403 mini digital amplifier board 2 * 3W Mini Audio Class D Amplifier Board 2.5-5v Input

Machine Electricity: 2.5 V - 5.5 V. Attention: Power supply needless superfluous 5.5 V, power supply positive / negative unnecessary connection.Delivery: 4-8 Europe, Recommendation: 4 Europe; Pay rate: 2-8 W.Available power cord USB port 5 V power supply, use equipment charger electric appliance USB port 5 V power supply, power supply for non-use as well.High efficiency 90%, 4 Ω loading 5 V under supply conditions, available 3 W (left vocal tract) + 3 W (right vocal tract) export rateD Degree of efficiency release, extreme, incorrect temperature, sound duration, unnecessary heated swirl, occupancy volume small.Successfully placed board disconnected electric circuit, mold clasp Short path overflow protection Coolant protection.