Operating Voltage: 2.5V ~ 5.5V
Speaker With: 4 ohm ~ 8 ohm (recommended: 4 ohm)
Speaker Power: 2W ~ 8W
Model:PA8403
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 4Ω, 8Ω 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!

Note:
First turn OFF and then powered speakers , or likely to cause damage to the chip;
Because digital volume control module has a great gain , so do not let too much leaving the audio signal input signal cut limiter.
 
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