Features:
This miniature PAM8403 can be used with a computer USB port, USB power bank or cell phone charger to provide 5V support power, or it can be powered by battery.
Class D amplifiers are highly efficient, at around 90%, while Class A, Class B and other amplifiers are only around 30% efficient.
Class D amplifiers are extremely efficient and do not affect the sound quality due to temperature without adding a heat sink and taking up less space, and the noise cancellation circuit is built into the amplifier board
Can provide 3W (left channel) + 3W (right channel) output power under 4 loads and 5V power supply conditions.
No popping sound for power on/off.
Module has short-circuit current protection, undervoltage lockout and overheat protection.
Specifications.
Operating voltage: 2.5V-5.5V
Speaker equipped with: 4-8 ohms Recommended: 4 ohms
Speaker power:2-8W
Size: 21 x 18 x 3.4mm(L x W x H)
Color:As shown in the picture
Net weight:1g
Package includes.
15*Super mini PAM8403 digital power amplifier board