Bán Bo mạch khuếch đại âm thanh kỹ thuật số mini 2X3W PAM8403 2.5-5V giá tốt nhất

Specifications: Has excellent capability in noise suppression, in the absence of connecting to audio-input, can not hear any noise even when ear closes to the speaker. Two-channel stereo, 5V power supply can output 3W + 3W power, can directly drive 4Ω, 8Ω small speakers. The unique non-LC filter Class-D digital power amplifier board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground balance and inter-channel crosstalk, ultra-miniature design. Can easily be placed in the mini space inside of a variety of digital products, high amplification efficiency. Item Name: Digital Amplifier Board Rated Working Voltage 2.5V - 5V Limit Operating Voltage: 5.5V Size: 1.85cm x 2.11cm/0.73" x 0.83" (Approx.) Notes: The left and right channel output of the "negative" and can not be connected together, otherwise it will burn IC, and should be preceded powered speakers connected(load). Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 1 x Digital Amplifier Board #255v #Amplifieraccessorie #Amplifierboard #Clas #Ds #Digitalamplifierboard #Home&Garden #Mini #Super #Usb