5PCS PAM8403 module Super digital amplifier board 2 * 3W Class D digital amplifier board efficient 2.5 to 5V USB power supply

PAM8403 Green Feature:
Model: PA8403
Power: Low
Power Super size: 1.85 * 2.11 cm Excellent noise suppression, in the absence of circumstances connected to input audio ear close to the speaker can not hear any noise, two-channel stereo, 5V power supply can output 3W 3W power, can directly drive 4, 8 small speakers, the output power large, full of energy, good sound quality. The unique non-LC filter Class-D digital power board can be directly used computer USB power supply. Double panel wiring, wiring properly resolve the ground potential caused by balance and inter-channel crosstalk, ultra-miniature design, can easily be placed in a variety of digital products within a small space, high amplification efficiency. All using the whole plate welding machine, welding quality comparable non-manual soldering iron!
Customer common problems: 1, 2 * 3 w miniature digital power amplifier board class D power supply can use the computer?
Answer: power amplifier board can use a computer power supply, but will produce noise may be produced (also some customers did not appear murmurs), the best advice of independent power supply. 2, miniature digital 2 * 3 w class D power amplifier boards with the speaker of the house is good?
Answer: our speaker is only provide DIY players try, sound is not particularly good, if the pursuit of high sound client can buy separately. 3, 2 * 3 w miniature digital power amplifier board class D why there are noise after power on the speaker?
The answer: 1.