2pcs Mini Digital Power Amplifier Board 3W+3W DC AMP Module 5V USB Power Supply

Description

Ultra-small two-channel 3W high-power USB-powered mini digital amplifier board
Product information
[3 x 2] 6W of power at 5V input
The power supply is recommended to take the USB-5V or a single lithium-powered.
Power: 3.6 to 5.5V, single-cell lithium battery or USB power supply suitable and can also be used four 1.2V battery-powered, when use transformer power supply, be sure to add a 5V regulator circuit, more than 5.5V chip will burn.
Power supply: direct current (DC ):3.6v5.5V
Output power:3W+3W (4 Euro )
Signal to noise ratio:90dB
Efficiency: >90%
Size:24*15.5*mm size:20mm positioning holes spaced aperture:2mm
Note:
1: the power positive and negative electrodes cannot be reversed, the supply voltage does not exceed5.5V, these two contrary will cause IC damage.
2: the film has high gain buffer, can not change the board of any element parameter, does not correspond to the parameters will lead to IC damage.
3: Please input line with shielding line, can play a role of anti interference, eliminate the clutter current sound.
4: the output for the CMOS BTL driver around the horn pipe, negative cannot be connected together, which is connected with a horn4 lines are completely independent, does not allow access!
Package includes:
2x amplifier board
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On Aug-11-17 at 02:08:48 PDT, seller added the following information: