Specification:
Origin: Mainland China
Type: Voltage Regulator
Condition: New
Supply Voltage: DC3.6-5.5 V
Model Number: Digital Power Amplifier Board
PAM8403 Ultra Mini Digital Power Amplifier Board Small Power Amplifier Board
Product parameters:
Power supply: DC 1A (DC): 5V
Power supply range: DC3.6V-5.5V
Output power: 3W+3W (4 ohms)
Output channel: left and right double channel 3W*2 (4 ohms)
Signal-to-noise ratio: 90dB
Efficiency: >90%
Product size: 24*15*2mm
Precautions:
1: The positive and negative poles of the power supply cannot be reversed, and the power supply voltage cannot exceed 5.5V. These two violations will cause damage to the IC.
2: There is a high-gain buffer inside the chip, and the parameters of any components on the board cannot be changed. Unsuitable parameters will cause damage to the IC.
3: Please try to use a shielded line for the input line, which can play an anti-interference role and eliminate clutter and current sound.
4: The output is driven by cmos tube BTL, the negative poles of the left and right speakers cannot be connected together, that is, the 4 wires connected to the speakers are completely independent, and joint connection is not allowed!

Note:
Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!
Please allow 1-2cm measuring deviation due to manual measurement.